Cita APA (7a ed.)

Wiig, K. M. (1990). Expert systems: A manager's guide. International labour office.

Cita Chicago Style (17a ed.)

Wiig, Karl M. Expert Systems: A Manager's Guide. Geneva: International labour office, 1990.

Cita MLA (9a ed.)

Wiig, Karl M. Expert Systems: A Manager's Guide. International labour office, 1990.