APA (7th ed.) Citation

Walters, R. S. (1978). Vacuum transfer system increases sugar maple sap yield. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station.

Chicago Style (17th ed.) Citation

Walters, Russell S. Vacuum Transfer System Increases Sugar Maple Sap Yield. Broomall, Pa.: Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1978.

MLA (9th ed.) Citation

Walters, Russell S. Vacuum Transfer System Increases Sugar Maple Sap Yield. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station, 1978.