APA (7th ed.) Citation

United States School Garden Army. (1919). Forty lessons in gardening for the northeastern states. U.S. G.P.O..

Chicago Style (17th ed.) Citation

United States School Garden Army. Forty Lessons in Gardening for the Northeastern States. Washington: U.S. G.P.O., 1919.

MLA (9th ed.) Citation

United States School Garden Army. Forty Lessons in Gardening for the Northeastern States. U.S. G.P.O., 1919.

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