APA (7th ed.) Citation

Nichols, H. E. (1957). Laboratory exercises in horticulture (3d ed., rev.). Iowa State College Press.

Chicago Style (17th ed.) Citation

Nichols, Harry E. Laboratory Exercises in Horticulture. 3d ed., rev. Ames: Iowa State College Press, 1957.

MLA (9th ed.) Citation

Nichols, Harry E. Laboratory Exercises in Horticulture. 3d ed., rev. Iowa State College Press, 1957.