Cita APA (7a ed.)

Williams, N., & Williams, S. (1970). The Moral development of children. MacMillan.

Cita Chicago Style (17a ed.)

Williams, Norman, y Sheila Williams. The Moral Development of Children. London: MacMillan, 1970.

Cita MLA (8a ed.)

Williams, Norman, y Sheila Williams. The Moral Development of Children. MacMillan, 1970.