Tohutoro APA (7th ed.)

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

Tohutoru Kātū Chicago (17th ed.)

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

Tohutoro MLA (9th ed.)

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