APA (7 वां संस्करण) प्रशस्ति पत्र

OLU-OBI, A., HEDLIN , R. A., & CHO, C. M. (2020). FATE OF ADDED NITROGEN IN SOILS. The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

OLU-OBI, A., R. A. HEDLIN , और C. M. CHO. FATE OF ADDED NITROGEN IN SOILS. The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria, 2020.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

OLU-OBI, A., et al. FATE OF ADDED NITROGEN IN SOILS. The Faculty of Agriculture Obafemi Awolowo University, Ile-Ife, Nigeria, 2020.