APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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