APA (7th ed.) Citation

PC Software Interest Group (Sunnyvale, Calif.). (1988). Shareware magazine. PC-SIG.

Chicago Style (17th ed.) Citation

PC Software Interest Group (Sunnyvale, Calif.). Shareware Magazine. Sunnyvale, Calif.: PC-SIG, 1988.

MLA (8th ed.) Citation

PC Software Interest Group (Sunnyvale, Calif.). Shareware Magazine. PC-SIG, 1988.

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