@inbook{5f04345f4a54473bad49f978d4129bc6,
title = "Enhancing student motivation in applied physics by means of a pbl module.",
keywords = "Boek internat.wet. > 80 pag",
author = "{de Graaff}, E and P Kruit",
note = "ISBN: 0 7259 1065 8",
year = "1999",
language = "Undefined/Unknown",
isbn = "0725910658",
pages = "83--87",
editor = "J Conway and A Williams and D Melville",
booktitle = "Research and Development in Problem Based Learning: A Way Forward",
publisher = "Australian Problem Based Learning Network",
}