Gaya APA

Jonassen, D, H. (2011). Learning to Solve Problems: A Handbook for Designing Problem-Solving Learning Environments . New York: Routledge: Taylor dan Francis Group.

Gaya MLA

Jonassen, David, H.. "Learning to Solve Problems: A Handbook for Designing Problem-Solving Learning Environments". New York: Routledge: Taylor dan Francis Group, 2011. Text.