APA (7e ed.) Bronvermelding
Torp, L., & Sage, S. (2002). Problems as possibilities: Problem-based learning for K-16 education. Association for Supervision & Curriculum Development.
Chicago (17e ed.) Bronvermelding
Torp, Linda, en Sara Sage. Problems as Possibilities: Problem-based Learning for K-16 Education. Alexandria, Va.: Association for Supervision & Curriculum Development, 2002.
MLA (9e ed.) Bronvermelding
Torp, Linda, en Sara Sage. Problems as Possibilities: Problem-based Learning for K-16 Education. Association for Supervision & Curriculum Development, 2002.
Let op: Deze citaties zijn niet altijd 100% accuraat.