Freiberg Kevin & Freiberg Jackie. (1996). Nuts!: Southwest Airlines' crazy recipe for business and personal success. Bard Press Publishing.
Chicago-referens (17:e uppl.)Freiberg Kevin och Freiberg Jackie. Nuts!: Southwest Airlines' Crazy Recipe for Business and Personal Success. Texas ,USA: Bard Press Publishing, 1996.
MLA-referens (9:e uppl.)Freiberg Kevin och Freiberg Jackie. Nuts!: Southwest Airlines' Crazy Recipe for Business and Personal Success. Bard Press Publishing, 1996.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.