Cita APA (7a ed.)

Walker, l. J. (1989). A longitudinal study of moral reasoning. Child development <Malden, Mass.>, 60(1), 157-166.

Cita Chicago Style (17a ed.)

Walker, lawrence J. "A Longitudinal Study of Moral Reasoning." Child Development <Malden, Mass.> 60, no. 1 (1989): 157-166.

Cita MLA (9a ed.)

Walker, lawrence J. "A Longitudinal Study of Moral Reasoning." Child Development <Malden, Mass.>, vol. 60, no. 1, 1989, pp. 157-166.