APA (7th ed.) Citation

Olle, T. W. (1991). Information systems methodologies: A framework for understanding (2nd ed.). Addison-Wesley.

Chicago Style (17th ed.) Citation

Olle, T. William. Information Systems Methodologies: A Framework for Understanding. 2nd ed. Wokingham, England: Addison-Wesley, 1991.

MLA (9th ed.) Citation

Olle, T. William. Information Systems Methodologies: A Framework for Understanding. 2nd ed. Addison-Wesley, 1991.