Παραπομπή APA

Cooke, G. W. (1972). Fertilising for maximum yield. English Language Book Society.

Παραπομπή Chicago Style

Cooke, G W. Fertilising for Maximum Yield. London: English Language Book Society, 1972.

Παραπομπή MLA

Cooke, G W. Fertilising for Maximum Yield. English Language Book Society, 1972.