Cita APA

Geus, J. d., & Geus, J. d. (1970). Fertilizer guide for food grains in the tropics and subtropics. Zurich: Centre d'Etude de l'Azote.

Citación estilo Chicago

Geus, J.G. de, y J.G. de Geus. Fertilizer Guide for Food Grains in the Tropics and Subtropics. Zurich: Centre d'Etude de l'Azote, 1970.

Cita MLA

Geus, J.G. de, y J.G. de Geus. Fertilizer Guide for Food Grains in the Tropics and Subtropics. Zurich: Centre d'Etude de l'Azote, 1970.