Cita APA

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

Citación estilo Chicago

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

Cita MLA

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