APA-Zitierstil (7. Ausg.)
Torp, L., & Sage, S. (2002). Problems as possibilities: Problem-based learning for K-16 education. Association for Supervision & Curriculum Development.
Chicago-Zitierstil (17. Ausg.)
Torp, Linda, und Sara Sage. Problems as Possibilities: Problem-based Learning for K-16 Education. Alexandria, Va.: Association for Supervision & Curriculum Development, 2002.
MLA-Zitierstil (9. Ausg.)
Torp, Linda, und Sara Sage. Problems as Possibilities: Problem-based Learning for K-16 Education. Association for Supervision & Curriculum Development, 2002.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.