Cita APA (7th ed.)

Harlan, J. D., & Rivkin, M. S. (2000). Science experiences for the early childhood years: An integrated approach (7th ed.). Merrill.

Cita Chicago (17th ed.)

Harlan, Jean Durgin, i Mary S. Rivkin. Science Experiences for the Early Childhood Years: An Integrated Approach. 7th ed. Upper Saddle River, N.J: Merrill, 2000.

Cita MLA (9th ed.)

Harlan, Jean Durgin, i Mary S. Rivkin. Science Experiences for the Early Childhood Years: An Integrated Approach. 7th ed. Merrill, 2000.