Παραπομπή σε μορφή APA (7η εκδ.)
Torp, L., & Sage, S. (2002). Problems as possibilities: Problem-based learning for K-16 education. Association for Supervision & Curriculum Development.
Παραπομπή σε μορφή Chicago (17η εκδ.)
Torp, Linda, και Sara Sage. Problems as Possibilities: Problem-based Learning for K-16 Education. Alexandria, Va.: Association for Supervision & Curriculum Development, 2002.
Παραπομπή σε μορφή MLA (9th εκδ.)
Torp, Linda, και Sara Sage. Problems as Possibilities: Problem-based Learning for K-16 Education. Association for Supervision & Curriculum Development, 2002.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.