APA (7th ed.) Citation

Rule, G. K. (1939). Land facts on the southern plains. U.S. Govt. print. off.

Chicago Style (17th ed.) Citation

Rule, Glenn Kenton. Land Facts on the Southern Plains. Washington: U.S. Govt. print. off, 1939.

MLA (9th ed.) Citation

Rule, Glenn Kenton. Land Facts on the Southern Plains. U.S. Govt. print. off, 1939.