Παραπομπή APA

Yerrell, S. J., & World Conference on Transport Research. (1981). Transport research for social and economic progress. Aldershot: Gower.

Παραπομπή Chicago Style

Yerrell, Stuart J., and World Conference on Transport Research. Transport Research for Social and Economic Progress. Aldershot: Gower, 1981.

Παραπομπή MLA

Yerrell, Stuart J., and World Conference on Transport Research. Transport Research for Social and Economic Progress. Aldershot: Gower, 1981.

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