Cita APA (7a ed.)

Hu, D. (1987). Programmer's reference guide to expert systems. Howard W. Sams.

Cita Chicago Style (17a ed.)

Hu, David. Programmer's Reference Guide to Expert Systems. Indianapolis: Howard W. Sams, 1987.

Cita MLA (9a ed.)

Hu, David. Programmer's Reference Guide to Expert Systems. Howard W. Sams, 1987.