Παραπομπή APA

Entwistle, P. F. (1972). Pests of cocoa. Longman publishers.

Παραπομπή Chicago Style

Entwistle, P F. Pests of Cocoa. London: Longman publishers, 1972.

Παραπομπή MLA

Entwistle, P F. Pests of Cocoa. Longman publishers, 1972.