APA (7th ed.) Citation

Plumbe, A. J., & Savage, D. J. (1981). Bullock cart haulage in Sri Lanka. Transport and Road Research Laboratory.

Chicago Style (17th ed.) Citation

Plumbe, A. J., and D. J. Savage. Bullock Cart Haulage in Sri Lanka. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1981.

MLA (9th ed.) Citation

Plumbe, A. J., and D. J. Savage. Bullock Cart Haulage in Sri Lanka. Transport and Road Research Laboratory, 1981.