Cita APA (7th ed.)

Vasta, R. (1992). Six theories of child development: Revised formulations and current issues. J. Kingsley.

Cita Chicago (17th ed.)

Vasta, Ross. Six Theories of Child Development: Revised Formulations and Current Issues. London: J. Kingsley, 1992.

Cita MLA (9th ed.)

Vasta, Ross. Six Theories of Child Development: Revised Formulations and Current Issues. J. Kingsley, 1992.