Cita APA (7a ed.)

Richman, N. (1988). Problems of preschool children. Wiley.

Cita Chicago Style (17a ed.)

Richman, Naomi. Problems of Preschool Children. Chichester [u.a.]: Wiley, 1988.

Cita MLA (8a ed.)

Richman, Naomi. Problems of Preschool Children. Wiley, 1988.