APA (7th ed.) Citation

Higgins, A. (1948). Engine room questions and answers. McGraw-Hill Book Co..

Chicago Style (17th ed.) Citation

Higgins, Alex. Engine Room Questions and Answers. New York: McGraw-Hill Book Co., 1948.

MLA (9th ed.) Citation

Higgins, Alex. Engine Room Questions and Answers. McGraw-Hill Book Co., 1948.