Cita APA (7a ed.)
Girma, T., Fentaw, A., & Taye, G. (2007). The water quality of the Middle Awash Valley, Ethiopia.
Cita Chicago Style (17a ed.)
Girma, T., A. Fentaw, y G. Taye. The Water Quality of the Middle Awash Valley, Ethiopia. 2007.
Cita MLA (9a ed.)
Girma, T., et al. The Water Quality of the Middle Awash Valley, Ethiopia. 2007.
Precaución: Estas citas no son 100% exactas.