APA (7th ed.) Citation

Wade, B. L. (1943). A key to pea varieties. U. S. Government Printing Office.

Chicago Style (17th ed.) Citation

Wade, B. L. A Key to Pea Varieties. Washington: U. S. Government Printing Office, 1943.

MLA (9th ed.) Citation

Wade, B. L. A Key to Pea Varieties. U. S. Government Printing Office, 1943.

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