Adair, J. 1973. Action Centred Leadership. New York, USA: McGraw Hill.
Ansoff, H.I. 1957. Strategies for Diversification. Harvard Business Publishing, Massachusetts, USA.
Bosworth and Holland. 2004. Customer Centric Selling, 1st ed. New York, USA: McGraw Hill.
Branson, R. Founder of Virgin Group.
Cambridge Dictionary. Cambridge University Press, since 1995, Cambridge, UK.
Collins English Dictionary. Harper Collins, since 1979, Glasgow, UK.
Content Marketing Institute (www.contentmarketinginstitute.com).
Customer Insight Group (www.customerinsightgroup.com).
Dağdeviren, O. 2017. Ait—Çalışan, Anlam Arayan, Yalnızlaşan Şehirli İnsan! Istanbul, Turkey: Abaküs Kitap.
Danny Crates (www.dannycrates.co.uk).
Deming, W.E. 1993. The New Economics for Industry, Government, Education. Cambridge, Massachusetts, USA: MIT Press.
Dixon and Adamson. 2011. The Challenger Sale: How to Take Control of the Customer Conversation. Portfolio/Penguin, London, UK.
Dixon, Freeman, and Toman. 2010. Stop Trying to Delight Your Customers. Massachusetts, USA: Harvard Business Publishing.
Elias St. Elmo Lewis, USA advertising advocate.
Elop, S. 1963. We Didn’t Do Anything Wrong, But Somehow, We Lost. Online press conference.
George Herman “Babe” Ruth.
Ghemawat and Siegel. 2011. Cases about Redefining Global Strategy. Massachusetts, USA: Harvard Business Publishing.
Goodhart, C. 1975. in an article on Monetary Policy for the UK Government.
Henderson, B. 1968. Perspectives. Boston Consulting Group, Massachusetts, USA. HubSpot, Inc. (www.hubspot.com).
Kapture CRM (www.kapturecrm.com).
Kotler, and Armstrong. 2015. Principles of Marketing, 17th ed. Pearson, India.
Marketing Insider Group (www.marketinginsidergroup.com).
Marx, G. 1890–1977. If You’re Not Having Fun, You’re Probably Doing Something Wrong. date unknown, USA.
Maslow, A. 1943. A Theory of Human Motivation (Psychological Review). Washington D.C., USA: American Psychological Association.
Miller and Heiman. 1985. Strategic Selling. New York, USA: William Morrow and Company.
Räikkönen, K. 2012. Abu Dhabi Formula 1 Grand Prix, driving for Lotus.
Reichheld, F. 2002. The One Number You Need to Grow. Massachusetts, USA: Harvard Business Publishing.
Reichheld, F. 2011. The Ultimate Question 2.0 (Revised and Expanded Edition): How Net Promoter Companies Thrive in a Customer-Driven World. Massachusetts, USA: Harvard Business Publishing. Brighton.
Satmetrix Systems, Inc. (www.satmetrix.com).
Shopify (www.shopify.co.uk).
Sir David Brailsford CBE.
Strauss, N. 2014. The Game and Rules of the Game. Edinburgh, UK: Canongate.
Strong, E.K., Jr. 1925. The Psychology of Selling and Advertising. New York, USA: McGraw Hill.
Superoffice (www.superoffice.com).
Taleb, N.N. 2018. Skin in the Game. New York, USA: Random House.
Townsend, W.W. 1924. Bond Salesmanship. New York, USA: Henry Holt and Company.
Visier Inc. (www.visier.com).