Cita APA (7a ed.)

Karpoe, K. P., & Olney, R. L. (1983). The effect of boys' or girls toys on sex-typed play in preadolescents. [s.n.].

Cita Chicago Style (17a ed.)

Karpoe, Kelly P., y Rachel L. Olney. The Effect of Boys' or Girls Toys on Sex-typed Play in Preadolescents. [S.l.]: [s.n.], 1983.

Cita MLA (9a ed.)

Karpoe, Kelly P., y Rachel L. Olney. The Effect of Boys' or Girls Toys on Sex-typed Play in Preadolescents. [s.n.], 1983.