Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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