APA (7th ed.) Citation

United States. Army Materiel Command & Knovel (Firm). (1975). Natural environmental factors. U.S. Army Material Command.

Chicago Style (17th ed.) Citation

United States. Army Materiel Command and Knovel (Firm). Natural Environmental Factors. Alexandria, Va.: U.S. Army Material Command, 1975.

MLA (9th ed.) Citation

United States. Army Materiel Command and Knovel (Firm). Natural Environmental Factors. U.S. Army Material Command, 1975.