APA (7e ed.) Bronvermelding

Harold Abelson, A. A. D. Turtle geometry The computer as a medium for exploring mathematics. The Mit Press.

Chicago (17e ed.) Bronvermelding

Harold Abelson, Andrea A. Disessa. Turtle Geometry The Computer as a Medium for Exploring Mathematics. The Mit Press.

MLA (8e ed.) Bronvermelding

Harold Abelson, Andrea A. Disessa. Turtle Geometry The Computer as a Medium for Exploring Mathematics. The Mit Press.

Let op: Deze citaties zijn niet altijd 100% accuraat.