APA (7th ed.) Citation

Berry, J. (1989). Upgrading Systems, Software, and Microcomputers.

Chicago Style (17th ed.) Citation

Berry, John. Upgrading Systems, Software, and Microcomputers. 1989.

MLA (9th ed.) Citation

Berry, John. Upgrading Systems, Software, and Microcomputers. 1989.

Warning: These citations may not always be 100% accurate.