APA (7th ed.) Citation

U.S. department of agriculture. (1981). Plant inventory: Plant - material introduced January 1 to december 31, 1978. U.S. printing office.

Chicago Style (17th ed.) Citation

U.S. department of agriculture. Plant Inventory: Plant - Material Introduced January 1 to December 31, 1978. Washington, DC: U.S. printing office, 1981.

MLA (8th ed.) Citation

U.S. department of agriculture. Plant Inventory: Plant - Material Introduced January 1 to December 31, 1978. U.S. printing office, 1981.