APA (7th ed.) Citation

Hansell, K. J. (1989). The Teleconferencing manager's guide. Knowledge Industry Publications.

Chicago Style (17th ed.) Citation

Hansell, Kathleen Jane. The Teleconferencing Manager's Guide. White Plains, NY: Knowledge Industry Publications, 1989.

MLA (9th ed.) Citation

Hansell, Kathleen Jane. The Teleconferencing Manager's Guide. Knowledge Industry Publications, 1989.