APA (7th ed.) Citation

Seybold, J. W. (1986). Prime user's guide (4th ed.). Prime Computer, Inc..

Chicago Style (17th ed.) Citation

Seybold, John W. Prime User's Guide. 4th ed. Natick, Mass.: Prime Computer, Inc., 1986.

MLA (8th ed.) Citation

Seybold, John W. Prime User's Guide. 4th ed. Prime Computer, Inc., 1986.