Παραπομπή APA

Brown, G. D., & Harold. (1918). Rubber: In Sources, Cultivation and Preparation. John Murray.

Παραπομπή Chicago Style

Brown, Gary Deward, και Harold. Rubber: In Sources, Cultivation and Preparation. London: John Murray, 1918.

Παραπομπή MLA

Brown, Gary Deward, και Harold. Rubber: In Sources, Cultivation and Preparation. John Murray, 1918.