APA (7th ed.) Citation

Nagel, R. H. (1956). Chemical control of the fir engraver. Rocky Mountain Forest and Range Experiment Station.

Chicago Style (17th ed.) Citation

Nagel, R. H. Chemical Control of the Fir Engraver. Fort Collins, Colo.: Rocky Mountain Forest and Range Experiment Station, 1956.

MLA (9th ed.) Citation

Nagel, R. H. Chemical Control of the Fir Engraver. Rocky Mountain Forest and Range Experiment Station, 1956.