APA (7th ed.) Citation

Usman, M., Njuho, P., Elfaki, F. A. M., & Daoud, J. I. (2010). The combination of several RCBDs.

Chicago Style (17th ed.) Citation

Usman, Mustofa, Peter Njuho, Faiz Ahmed Mohamed Elfaki, and Jamal Ibrahim Daoud. The Combination of Several RCBDs. 2010.

MLA (8th ed.) Citation

Usman, Mustofa, et al. The Combination of Several RCBDs. 2010.