Cita APA (7a ed.)

Boom, J. (1989). Different conceptions of stage in theories of cognitive and moral development. Journal of moral education, 18(3), 208-217.

Cita Chicago Style (17a ed.)

Boom, Johannes. "Different Conceptions of Stage in Theories of Cognitive and Moral Development." Journal of Moral Education 18, no. 3 (1989): 208-217.

Cita MLA (9a ed.)

Boom, Johannes. "Different Conceptions of Stage in Theories of Cognitive and Moral Development." Journal of Moral Education, vol. 18, no. 3, 1989, pp. 208-217.