Kevin Freiberg; Jackie Freiberg. (1998). Nuts!: Southwest Airlines' Crazy Recipe for Business and Personal Success (Reprint.). Crown Business.
Lua i Stíl Chicago (17ú heag.)Kevin Freiberg; Jackie Freiberg. Nuts!: Southwest Airlines' Crazy Recipe for Business and Personal Success. Reprint. Crown Business, 1998.
Lua MLA (9ú heag.)Kevin Freiberg; Jackie Freiberg. Nuts!: Southwest Airlines' Crazy Recipe for Business and Personal Success. Reprint. Crown Business, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.