Gaya APA
Swanson, C, P., I, I, B, D, I, F, G. (NULL).
The challenge of problem-based learning .
London::
London: Kogan Page; 1997.
Gaya MLA
Swanson, Carl, P.., I, I., Boud,, David, II., Feletti,, Grahame.
"The challenge of problem-based learning".
London::
London: Kogan Page; 1997,
NULL.
Text.