APA (7th ed.) Citation

PC Clearinghouse, Inc. (1983). PC Clearinghouse directory. PC Clearinghouse, Inc..

Chicago Style (17th ed.) Citation

PC Clearinghouse, Inc. PC Clearinghouse Directory. Fairfax, Va.: PC Clearinghouse, Inc., 1983.

MLA (9th ed.) Citation

PC Clearinghouse, Inc. PC Clearinghouse Directory. PC Clearinghouse, Inc., 1983.

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