APA引文

Gregory, P. H. (1974). Phytophthora disease of cocoa. Longman publishers.

Chicago Edition Citation

Gregory, P H. Phytophthora Disease of Cocoa. London: Longman publishers, 1974.

MLA引文

Gregory, P H. Phytophthora Disease of Cocoa. Longman publishers, 1974.

警告：這些引文格式不一定是100％准確.