Cita APA

Hartley, C. W. S. (1977). Oil palm (2nd. ed.). Longman.

Citación estilo Chicago

Hartley, C. W. S. Oil Palm. 2nd. ed. London: Longman, 1977.

Cita MLA

Hartley, C. W. S. Oil Palm. 2nd. ed. Longman, 1977.