Cita APA (7th ed.)

Harlan, J. D. (1992). Science experiences for the early childhood years (5th ed.). Macmillan.

Cita Chicago (17th ed.)

Harlan, Jean Durgin. Science Experiences for the Early Childhood Years. 5th ed. New York: Macmillan, 1992.

Cita MLA (9th ed.)

Harlan, Jean Durgin. Science Experiences for the Early Childhood Years. 5th ed. Macmillan, 1992.