APA (7th ed.) Citation

Warr, W. A., Willett, P., & Downs, G. (1992). Directory of chemistry software 1992. Cherwell Scientific Publishing and the American Chemical Society.

Chicago Style (17th ed.) Citation

Warr, Wendy A., Peter Willett, and Geoff Downs. Directory of Chemistry Software 1992. Oxford: Cherwell Scientific Publishing and the American Chemical Society, 1992.

MLA (8th ed.) Citation

Warr, Wendy A., et al. Directory of Chemistry Software 1992. Cherwell Scientific Publishing and the American Chemical Society, 1992.