Gaya APA
Jonassen, D, H. (2011).
Learning to Solve Problems: a Handbook for Designing Problem-Solving Learning Environments .
nyu:
Routledge.
Gaya MLA
Jonassen, David, H..
"Learning to Solve Problems: a Handbook for Designing Problem-Solving Learning Environments".
nyu:
Routledge,
2011.
Buku.