APA (7th ed.) Citation

Callahan, M., Anis, N., & Dvorak, J. C. (1993). Dr. File finder's guide to shareware. Osborne McGraw-Hill.

Chicago Style (17th ed.) Citation

Callahan, Mike, Nick Anis, and John C. Dvorak. Dr. File Finder's Guide to Shareware. California: Osborne McGraw-Hill, 1993.

MLA (9th ed.) Citation

Callahan, Mike, et al. Dr. File Finder's Guide to Shareware. Osborne McGraw-Hill, 1993.