APA (7th ed.) Citation

Korsgaard, O. (1997). Adult learning and the challenges of the twenty-first century. Association for World Education.

Chicago Style (17th ed.) Citation

Korsgaard, Ove. Adult Learning and the Challenges of the Twenty-first Century. [Denmark?]: Association for World Education, 1997.

MLA (9th ed.) Citation

Korsgaard, Ove. Adult Learning and the Challenges of the Twenty-first Century. Association for World Education, 1997.