Klinkhammer, J. (2009). Student Pieces: A Second Look at Problem Solving. e-Publications@Marquette.
Chicago-viite (17. p.)Klinkhammer, John. Student Pieces: A Second Look at Problem Solving. e-Publications@Marquette, 2009.
MLA-viite (8. p.)Klinkhammer, John. Student Pieces: A Second Look at Problem Solving. e-Publications@Marquette, 2009.
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