APA (7th ed.) Citation

McColvin, L. R., & McColvin, E. R. (1947). Library stock and assistance to readers, a textbook. Grafton &co.

Chicago Style (17th ed.) Citation

McColvin, Lionel Roy, and Eric Raymond McColvin. Library Stock and Assistance to Readers, a Textbook. London: Grafton &co, 1947.

MLA (9th ed.) Citation

McColvin, Lionel Roy, and Eric Raymond McColvin. Library Stock and Assistance to Readers, a Textbook. Grafton &co, 1947.