APA (7 वां संस्करण) प्रशस्ति पत्र

Sanford, W. W., Usman, S., Obot, E. O., Isichei, A. O., & Wari, M. (2014). Relationship of Woody Plants to Herbaceous Production in Nigerian Savanna.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Sanford, William W., Sugei Usman, Emmanuel O. Obot, Augustine O. Isichei, और Musa Wari. Relationship of Woody Plants to Herbaceous Production in Nigerian Savanna. 2014.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Sanford, William W., et al. Relationship of Woody Plants to Herbaceous Production in Nigerian Savanna. 2014.