APA (7th ed.) Citation

Hinkle, O., Henry, J., & Walsh, H. E. (1958). How to write columns. Iowa State College Press.

Chicago Style (17th ed.) Citation

Hinkle, Olin, John Henry, and Harry E. Walsh. How to Write Columns. Ames: Iowa State College Press, 1958.

MLA (9th ed.) Citation

Hinkle, Olin, et al. How to Write Columns. Iowa State College Press, 1958.