Gaya APA

HARLAN, J, D., RIVKIN, M, S. (2000). Science experiences for the early childhood (7th ed.). Upper Saddle River: Merrill.

Gaya MLA

HARLAN, Jean, D.., RIVKIN, Mary, S.. "Science experiences for the early childhood". 7th ed. Upper Saddle River: Merrill, 2000. Text.