Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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