APA (7th ed.) Citation

(1980). International directory of software 1980 - 81. CUYB Publ..

Chicago Style (17th ed.) Citation

International Directory of Software 1980 - 81. Bournemouth: CUYB Publ., 1980.

MLA (9th ed.) Citation

International Directory of Software 1980 - 81. CUYB Publ., 1980.

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