
Pingel, F. (1999). UNESCO guidebook: On textbook research and textbook revision. Hahn.
Style de citation ChicagoPingel, Falk. UNESCO Guidebook: On Textbook Research and Textbook Revision. Hannover: Hahn, 1999.
Style de citation MLAPingel, Falk. UNESCO Guidebook: On Textbook Research and Textbook Revision. Hahn, 1999.
Attention : ces citations peuvent ne pas être correctes à 100%.