APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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