APA (7th ed.) Citation

Purdue University. Cooperative Extension Service, Purdue University. Agricultural Experiment Station, Purdue University. Agricultural Extension Service, & Purdue University. Horticulture Department. Mimeo HO. Cooperative Extension Service, Purdue University.

Chicago Style (17th ed.) Citation

Purdue University. Cooperative Extension Service, Purdue University. Agricultural Experiment Station, Purdue University. Agricultural Extension Service, and Purdue University. Horticulture Department. Mimeo HO. Lafayette, Ind.: Cooperative Extension Service, Purdue University.

MLA (9th ed.) Citation

Purdue University. Cooperative Extension Service, et al. Mimeo HO. Cooperative Extension Service, Purdue University.