Παραπομπή σε μορφή APA (7η εκδ.)

Rehm, S., & Espig, G. (1991). The cultivated plants of the tropics and subtropics: Cultivation, economic value, utilization. V. J. Margraf.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Rehm, Sigmund, και Gustav Espig. The Cultivated Plants of the Tropics and Subtropics: Cultivation, Economic Value, Utilization. West Germany: V. J. Margraf, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Rehm, Sigmund, και Gustav Espig. The Cultivated Plants of the Tropics and Subtropics: Cultivation, Economic Value, Utilization. V. J. Margraf, 1991.