Cita APA (7th ed.)

Pikunas, J. (1961). Psychology of human development. McGraw-Hill.

Cita Chicago (17th ed.)

Pikunas, Justin. Psychology of Human Development. Nueva York: McGraw-Hill, 1961.

Cita MLA (9th ed.)

Pikunas, Justin. Psychology of Human Development. McGraw-Hill, 1961.