APA (7th ed.) Citation

United States. Bureau of Agricultural Economics & Richards, P. (1932). Factors affecting exports of U.S. hog products. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of Agricultural Economics and Preston Richards. Factors Affecting Exports of U.S. Hog Products. Washington: [publisher not identified], 1932.

MLA (9th ed.) Citation

United States. Bureau of Agricultural Economics and Preston Richards. Factors Affecting Exports of U.S. Hog Products. [publisher not identified], 1932.