Adebusuyi, B. A., & Aduayi, E. (2014). Soil Test and Nitrogen, Phosphorus and Potassium Requirement of Maize in Southwestern Nigeria. Obafemi Awolowo University.
Chicago-referens (17:e uppl.)Adebusuyi, Benson Adekunle, och E.A Aduayi. Soil Test and Nitrogen, Phosphorus and Potassium Requirement of Maize in Southwestern Nigeria. Obafemi Awolowo University, 2014.
MLA-referens (9:e uppl.)Adebusuyi, Benson Adekunle, och E.A Aduayi. Soil Test and Nitrogen, Phosphorus and Potassium Requirement of Maize in Southwestern Nigeria. Obafemi Awolowo University, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.