Cita APA (7th ed.)

Schell, R. E., & Hall, E. (1979). Developmental psychology today (3rd ed.). Random House.

Cita Chicago (17th ed.)

Schell, Robert E., i Elizabeth Hall. Developmental Psychology Today. 3rd ed. New York: Random House, 1979.

Cita MLA (9th ed.)

Schell, Robert E., i Elizabeth Hall. Developmental Psychology Today. 3rd ed. Random House, 1979.