APA (7th ed.) Citation
H, X., Ringler, C., Zhu, T., & A, W. (2013). Droughts in Pakistan: A spatiotemporal variability analysis using the standardized precipitation index. Informa UK Limited.
Chicago Style (17th ed.) Citation
H, Xie, Claudia Ringler, T. Zhu, and Waqas A. Droughts in Pakistan: A Spatiotemporal Variability Analysis Using the Standardized Precipitation Index. Informa UK Limited, 2013.
MLA (9th ed.) Citation
H, Xie, et al. Droughts in Pakistan: A Spatiotemporal Variability Analysis Using the Standardized Precipitation Index. Informa UK Limited, 2013.
Warning: These citations may not always be 100% accurate.