Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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