Cita APA

Stopher, P., & Stecher, C. (2006). Travel survey methods: Quality and future directions (1a. ed.). Elsevier.

Citación estilo Chicago

Stopher, Peter, and Cheryl Stecher. Travel Survey Methods: Quality and Future Directions. 1a. ed. Amsterdam: Elsevier, 2006.

Cita MLA

Stopher, Peter, and Cheryl Stecher. Travel Survey Methods: Quality and Future Directions. 1a. ed. Elsevier, 2006.