Tunbridge, R. J., & Jackson, R. L. (1980). The economics of stage carriage operation by private bus and coach companies. Transport and Road Research Laboratory.
Chicago-viite (17. p.)Tunbridge, R. J., ja R. L. Jackson. The Economics of Stage Carriage Operation by Private Bus and Coach Companies. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1980.
MLA-viite (9. p.)Tunbridge, R. J., ja R. L. Jackson. The Economics of Stage Carriage Operation by Private Bus and Coach Companies. Transport and Road Research Laboratory, 1980.
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