APA (7th ed.) Zitazioa

Biggs, D. C., Bol, M. A., & Baker, J. (2009). Guidebook for Conducting Airport User Surveys. Transportation Research Board.

Chicago Style (17th ed.) Zitazioa

Biggs, D. C., M. A. Bol, eta J. Baker. Guidebook for Conducting Airport User Surveys. Washington, D.C.: Transportation Research Board, 2009.

MLA (9th ed.) Zitazioa

Biggs, D. C., et al. Guidebook for Conducting Airport User Surveys. Transportation Research Board, 2009.