APA (7th ed.) Citation

Texas Forest Service. (1971). Forest trees of Texas: How to know them (8th ed., 3d printing. --.). The Service.

Chicago Style (17th ed.) Citation

Texas Forest Service. Forest Trees of Texas: How to Know Them. 8th ed., 3d printing. --. College Station, Texas: The Service, 1971.

MLA (9th ed.) Citation

Texas Forest Service. Forest Trees of Texas: How to Know Them. 8th ed., 3d printing. --. The Service, 1971.