APA (7th ed.) Citation

Hedtke, J. V. (1990). Using computer bulletin boards (2nd ed.). Management Information Source for the Twenty-first Centry.

Chicago Style (17th ed.) Citation

Hedtke, John V. Using Computer Bulletin Boards. 2nd ed. Portland, OR: Management Information Source for the Twenty-first Centry, 1990.

MLA (9th ed.) Citation

Hedtke, John V. Using Computer Bulletin Boards. 2nd ed. Management Information Source for the Twenty-first Centry, 1990.