Cita APA

Hartley, C. W. S. (1981). Oil palm (2.). Longman.

Chicago Edition Citation

Hartley, C W S. Oil Palm. 2. London: Longman, 1981.

Cita MLA

Hartley, C W S. Oil Palm. 2. Longman, 1981.

Atenció: Aquestes cites poden no estar 100% correctes.