APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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