APA (7e ed.) Bronvermelding
National Academies Press (U.S.) & ebrary, Inc. (2006). Learning to think spatially. National Academies Press.
Chicago (17e ed.) Bronvermelding
National Academies Press (U.S.) en Inc ebrary. Learning to Think Spatially. Washington, D.C.: National Academies Press, 2006.
MLA (9e ed.) Bronvermelding
National Academies Press (U.S.) en Inc ebrary. Learning to Think Spatially. National Academies Press, 2006.
Let op: Deze citaties zijn niet altijd 100% accuraat.