APA (7th ed.) Citation

de Graaff, E., & Bouhuijs, P. A. (1993). Implementation of problem-based learning in higher education. Thesis Publishers.

Chicago Style (17th ed.) Citation

de Graaff, Erik, and Peter A. Bouhuijs. Implementation of Problem-based Learning in Higher Education. Amsterdam: Thesis Publishers, 1993.

MLA (9th ed.) Citation

de Graaff, Erik, and Peter A. Bouhuijs. Implementation of Problem-based Learning in Higher Education. Thesis Publishers, 1993.