एपीए उद्धरण

David Hu. (1987). Programmers reference guide to expert Systems. Howard W Sams.

शिकागो स्टाइल उद्धरण

David Hu. Programmers Reference Guide to Expert Systems. Howard W Sams, 1987.

एमएलए उद्धरण

David Hu. Programmers Reference Guide to Expert Systems. Howard W Sams, 1987.