APA način citiranja (7. izdanje)
Torp, L., & Sage, S. (2002). Problems as possibilities: Problem-based learning for K-16 education. Association for Supervision & Curriculum Development.
Čikaški stil citiranja (17. izdanje)
Torp, Linda, i Sara Sage. Problems as Possibilities: Problem-based Learning for K-16 Education. Alexandria, Va.: Association for Supervision & Curriculum Development, 2002.
MLA način citiranja (9. izdanje)
Torp, Linda, i Sara Sage. Problems as Possibilities: Problem-based Learning for K-16 Education. Association for Supervision & Curriculum Development, 2002.
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