Gaya APA

Obenchain, K, M., Morris, R, V. (2011). 50 Social Studies Strategies for K-8 Classrooms (Third Edition). New York: Pearson.

Gaya MLA

Obenchain, Kathryn, M.., Morris, Ronald, V.. "50 Social Studies Strategies for K-8 Classrooms". Third Edition New York: Pearson, 2011. Buku.