APA (7th ed.) Citation

United States. Bureau of Plant Industry & Pentzer, W. T. (1929). Removal of spray residue from California Bartlett pears. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of Plant Industry and W. T. Pentzer. Removal of Spray Residue from California Bartlett Pears. Washington: [publisher not identified], 1929.

MLA (9th ed.) Citation

United States. Bureau of Plant Industry and W. T. Pentzer. Removal of Spray Residue from California Bartlett Pears. [publisher not identified], 1929.