Cita APA (7a ed.)
Franzen, H., & Ehlers, W. (1994). Tillage and mulching effects on physical properties of a tropical alfisol. Elsevier.
Cita Chicago Style (17a ed.)
Franzen, H., y W. Ehlers. Tillage and Mulching Effects on Physical Properties of a Tropical Alfisol. Elsevier, 1994.
Cita MLA (9a ed.)
Franzen, H., y W. Ehlers. Tillage and Mulching Effects on Physical Properties of a Tropical Alfisol. Elsevier, 1994.
Precaución: Estas citas no son 100% exactas.