J. Piaget. Cognitive development to adolescence: A reader, Erlbaum, Hilsdale, NJ, original-author: P. H. Mussen
original-publisher: Wiley
original-publisher-place: New York, NY
original-title: Manual of child psychology
original-date: 1970.(1988)
Y. Tetour, D. Boehringer, and T. Richter. Global Online Laboratory Consortium Remote Laboratories Workshop (GOLC), 2011 First, page 1 - 6. Rapid City, SD, IEEE, (October 2011)