APA (7th ed.) Citation

PC-SIG. (1991). The PC-SIG encyclopedia of shareware: хa иcomprehensive guide to low cost software for IBM and compatibles (4th ed.). PC-SIG.

Chicago Style (17th ed.) Citation

PC-SIG. The PC-SIG Encyclopedia of Shareware: хa иcomprehensive Guide to Low Cost Software for IBM and Compatibles. 4th ed. Sunnyvale: PC-SIG, 1991.

MLA (8th ed.) Citation

PC-SIG. The PC-SIG Encyclopedia of Shareware: хa иcomprehensive Guide to Low Cost Software for IBM and Compatibles. 4th ed. PC-SIG, 1991.

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