APA (7th ed.) Citation

United States. Department of Agriculture & ProQuest (Firm). (1968). The Yearbook of Agriculture 1968. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Department of Agriculture and ProQuest (Firm). The Yearbook of Agriculture 1968. Washington: [publisher not identified], 1968.

MLA (9th ed.) Citation

United States. Department of Agriculture and ProQuest (Firm). The Yearbook of Agriculture 1968. [publisher not identified], 1968.

Warning: These citations may not always be 100% accurate.