Cita APA (7a ed.)
Haque, I., & Lupwayi, N. (1999). Landform and phosphorus effects on nitrogen fixed by annual clovers and its contribution to succeeding cereals in the Ethiopian highlands.
Cita Chicago Style (17a ed.)
Haque, I., y N.Z Lupwayi. Landform and Phosphorus Effects on Nitrogen Fixed by Annual Clovers and Its Contribution to Succeeding Cereals in the Ethiopian Highlands. 1999.
Cita MLA (9a ed.)
Haque, I., y N.Z Lupwayi. Landform and Phosphorus Effects on Nitrogen Fixed by Annual Clovers and Its Contribution to Succeeding Cereals in the Ethiopian Highlands. 1999.
Precaución: Estas citas no son 100% exactas.