APA (7th ed.) Citation

English, J., & Cassidy, H. G. (1949). Principles of organic chemistry: An introductory text in organic chemistry. McGraw-Hill.

Chicago Style (17th ed.) Citation

English, James, and Harold Gomes Cassidy. Principles of Organic Chemistry: An Introductory Text in Organic Chemistry. New York: McGraw-Hill, 1949.

MLA (9th ed.) Citation

English, James, and Harold Gomes Cassidy. Principles of Organic Chemistry: An Introductory Text in Organic Chemistry. McGraw-Hill, 1949.