APA (7th ed.) Citation

Pettygrove, G. S. (1981). How to perform an agricultural experiment. VITA Publications Service.

Chicago Style (17th ed.) Citation

Pettygrove, G. Stuart. How to Perform an Agricultural Experiment. Arlington, Virginia: VITA Publications Service, 1981.

MLA (9th ed.) Citation

Pettygrove, G. Stuart. How to Perform an Agricultural Experiment. VITA Publications Service, 1981.