APA (7th ed.) Citation

Pettygrove, G. S. (1971). How to perform an agricultural experiment. Volunteers in Technical Assistance.

Chicago Style (17th ed.) Citation

Pettygrove, G. Stuart. How to Perform an Agricultural Experiment. Mt. Rainier, Md.: Volunteers in Technical Assistance, 1971.

MLA (9th ed.) Citation

Pettygrove, G. Stuart. How to Perform an Agricultural Experiment. Volunteers in Technical Assistance, 1971.