Dyfyniad APA

Tunbridge, R. J., & Jackson, R. L. (1980). The economics of stage carriage operation by private bus and coach companies. Transport and Road Research Laboratory.

Dyfyniad Arddull Chicago

Tunbridge, R. J., and R. L. Jackson. The Economics of Stage Carriage Operation by Private Bus and Coach Companies. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1980.

Dyfyniad MLA

Tunbridge, R. J., and R. L. Jackson. The Economics of Stage Carriage Operation by Private Bus and Coach Companies. Transport and Road Research Laboratory, 1980.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.