APA (7th ed.) Citation

Barker, B. O. (1989). Distance learning case studies. [Office of Technology Assessment].

Chicago Style (17th ed.) Citation

Barker, Bruce O. Distance Learning Case Studies. [Washington, D.C.?]: [Office of Technology Assessment], 1989.

MLA (9th ed.) Citation

Barker, Bruce O. Distance Learning Case Studies. [Office of Technology Assessment], 1989.