Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Zitierstil

Lüken, H., & Blümel, G. (1984). Phosphate rock as a direct application fertilizer: Can it help to relieve food shortage in some low income developing countries? Stuttgart: Schweizerbart.

Chicago Zitierstil

Lüken, Halo, and Georg Blümel. Phosphate Rock As a Direct Application Fertilizer: Can It Help to Relieve Food Shortage in Some Low Income Developing Countries? Stuttgart: Schweizerbart, 1984.

MLA Zitierstil

Lüken, Halo, and Georg Blümel. Phosphate Rock As a Direct Application Fertilizer: Can It Help to Relieve Food Shortage in Some Low Income Developing Countries? Stuttgart: Schweizerbart, 1984.