APA (7. basım) Alıntı

Ginsburg, H., & Opper, S. (1998). Pïaget's theory of intellectual development. UNESCO.

Chicago Style (17. basım) Atıf

Ginsburg, Herbert, ve Sylvia Opper. Pïaget's Theory of Intellectual Development. París, Francia: UNESCO, 1998.

MLA (9th ed.) Atıf

Ginsburg, Herbert, ve Sylvia Opper. Pïaget's Theory of Intellectual Development. UNESCO, 1998.