Dyfyniad APA
Heine, L. (2010). Problem solving in a foreign language. Mouton de Gruyter.
Dyfyniad Arddull Chicago
Heine, Lena. Problem Solving in a Foreign Language. Berlin ; New York: Mouton de Gruyter, 2010.
Dyfyniad MLA
Heine, Lena. Problem Solving in a Foreign Language. Mouton de Gruyter, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.