APA Edition Citation

Pyenson, L. L. (1951). Elements of plant protection. John Wiley & Sons INC.

Chicago Edition Citation

Pyenson, Louis L. Elements of Plant Protection. USA: John Wiley & Sons INC, 1951.

MLA Edition Citation

Pyenson, Louis L. Elements of Plant Protection. John Wiley & Sons INC, 1951.

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