APA (7th ed.) Citation

Koopman, H. L. (1917). The booklover and his books. The Boston book company.

Chicago Style (17th ed.) Citation

Koopman, Harry Lyman. The Booklover and His Books. Boston: The Boston book company, 1917.

MLA (9th ed.) Citation

Koopman, Harry Lyman. The Booklover and His Books. The Boston book company, 1917.