Παραπομπή APA

Heaver, T. D., & Nelson, J. C. (1977). Railway pricing under commercial freedom: The canadian experience. Vancouver: Centre for Transportation Studies.

Παραπομπή Chicago Style

Heaver, Trevor D., and James Cecil Nelson. Railway Pricing Under Commercial Freedom: The Canadian Experience. Vancouver: Centre for Transportation Studies, 1977.

Παραπομπή MLA

Heaver, Trevor D., and James Cecil Nelson. Railway Pricing Under Commercial Freedom: The Canadian Experience. Vancouver: Centre for Transportation Studies, 1977.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.