APA (7e ed.) Bronvermelding

Furth, H. G. (1969). Piaget and knowledge: Theoretical foundations. Prentice-Hall.

Chicago (17e ed.) Bronvermelding

Furth, Hans G. Piaget and Knowledge: Theoretical Foundations. Englewood Cliffs, N.J: Prentice-Hall, 1969.

MLA (9e ed.) Bronvermelding

Furth, Hans G. Piaget and Knowledge: Theoretical Foundations. Prentice-Hall, 1969.