APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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

警告：這些引文格式不一定是100％准確.