Chapter 1
5. http://www.foodreference.com/html/f-chick-consp.html
3. http://www.bts.gov/publications/national_transportation_statistics/, Table 1–16.
4. http://www.bts.gov/publications/national_transportation_statistics/, Table 1–16.
5. http://www.bts.gov/publications/national_transportation_statistics/, Table 1–16.
6. http://www.census.gov/prod/cen2010/briefs/c2010br-03.pdf
7. http://www.census.gov/prod/cen2010/briefs/c2010br-03.pdf
8. http://www.bts.gov/programs/airline_information/baggage_fees/
9. http://www.bts.gov/programs/airline_information/baggage_fees/
10. http://www.bts.gov/programs/airline_information/baggage_fees/
11. http://www.bts.gov/programs/airline_information/ontime_tables/2012-05/index.html
12. http://www.bts.gov/programs/airline_information/ontime_tables/2012-05/index.html