Stecher, C., & Stopher, P. R. (2006). Travel survey methods: Quality and future directions. Emerald Group Publishing Limited.
Citación estilo ChicagoStecher, Cheryl, and Peter R. Stopher. Travel Survey Methods: Quality and Future Directions. United Kingdom: Emerald Group Publishing Limited, 2006.
Cita MLAStecher, Cheryl, and Peter R. Stopher. Travel Survey Methods: Quality and Future Directions. Emerald Group Publishing Limited, 2006.
Warning: These citations may not always be 100% accurate.