APA (7th ed.) Citation

United States. Department of Agriculture. (1931). Forest rangers' catechism; questions and answers on national forests of California region. GPO.

Chicago Style (17th ed.) Citation

United States. Department of Agriculture. Forest Rangers' Catechism; Questions and Answers on National Forests of California Region. [Washington]: GPO, 1931.

MLA (9th ed.) Citation

United States. Department of Agriculture. Forest Rangers' Catechism; Questions and Answers on National Forests of California Region. GPO, 1931.

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