Παραπομπή APA

Hothersall, D. C., & Salter, R. J. (1977). Transport and the Environment. Crosby Lockwood Staples.

Παραπομπή Chicago Style

Hothersall, David. C., και Richard. J. Salter. Transport and the Environment. London: Crosby Lockwood Staples, 1977.

Παραπομπή MLA

Hothersall, David. C., και Richard. J. Salter. Transport and the Environment. Crosby Lockwood Staples, 1977.