APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.