Cita APA (7a ed.)

Ettema, D., & Timmermans, H. J. P. (1997). Activity-based approaches to travel analysis. Pergamon.

Cita Chicago Style (17a ed.)

Ettema, Dick, y H. J. P. Timmermans. Activity-based Approaches to Travel Analysis. Oxford [etc.]: Pergamon, 1997.

Cita MLA (9a ed.)

Ettema, Dick, y H. J. P. Timmermans. Activity-based Approaches to Travel Analysis. Pergamon, 1997.