Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.