APA aipamena

Timilsena, J., Piechota, T. C., Hidalgo León, H. G., & Tootle, G. (2007). Five Hundred Years of Hydrological Drought in the Upper Colorado River Basin.

Chicago Style aipamena

Timilsena, Janak, Thomas C. Piechota, Hugo G. Hidalgo León, y Glenn Tootle. Five Hundred Years of Hydrological Drought in the Upper Colorado River Basin. 2007.

MLA aipamena

Timilsena, Janak, Thomas C. Piechota, Hugo G. Hidalgo León, y Glenn Tootle. Five Hundred Years of Hydrological Drought in the Upper Colorado River Basin. 2007.