APA (7th ed.) Citation

Patterson, A. M., & Capell, L. T. (1960). The ring index: A list of ring systems used in organic chemistry (Second edition.). American Chemical Society.

Chicago Style (17th ed.) Citation

Patterson, Austin M., and Leonard T. Capell. The Ring Index: A List of Ring Systems Used in Organic Chemistry. Second edition. Washington: American Chemical Society, 1960.

MLA (9th ed.) Citation

Patterson, Austin M., and Leonard T. Capell. The Ring Index: A List of Ring Systems Used in Organic Chemistry. Second edition. American Chemical Society, 1960.