APA (7th ed.) Citation

Purdue University. Cooperative Extension Service & Purdue University. Horticulture Department. HO. Cooperative Extension Service, Purdue University.

Chicago Style (17th ed.) Citation

Purdue University. Cooperative Extension Service and Purdue University. Horticulture Department. HO. Lafayette, Ind.: Cooperative Extension Service, Purdue University.

MLA (9th ed.) Citation

Purdue University. Cooperative Extension Service and Purdue University. Horticulture Department. HO. Cooperative Extension Service, Purdue University.