APA (7th ed.) Citation

Hoover, R. E. (1984). Executive's guide to online information services. Knowledge Industry Publ.

Chicago Style (17th ed.) Citation

Hoover, Ryan E. Executive's Guide to Online Information Services. White Plains, NY: Knowledge Industry Publ, 1984.

MLA (9th ed.) Citation

Hoover, Ryan E. Executive's Guide to Online Information Services. Knowledge Industry Publ, 1984.