APA (7th ed.) Citation

Palmer, W. C., & Denny, L. M. (1971). Drought bibliography. U.S. Environmental Data Service.

Chicago Style (17th ed.) Citation

Palmer, Wayne C., and Lyle M. Denny. Drought Bibliography. Silver Spring, Md.: U.S. Environmental Data Service, 1971.

MLA (9th ed.) Citation

Palmer, Wayne C., and Lyle M. Denny. Drought Bibliography. U.S. Environmental Data Service, 1971.