APA (7th ed.) Citation

Kangassalo, H., Jaakola, H., & Ohsuga, S. (1990). Information modelling and knowledge bases. IOS Press.

Chicago Style (17th ed.) Citation

Kangassalo, Hannu, H. Jaakola, and S. Ohsuga. Information Modelling and Knowledge Bases. Netherlands: IOS Press, 1990.

MLA (9th ed.) Citation

Kangassalo, Hannu, et al. Information Modelling and Knowledge Bases. IOS Press, 1990.