Gaya APA
Cruz, B, C., Thornton, S, J. (2009).
Teaching Social Studies to English Language Learners (Edisi :1).
New York:
Routledge.
Gaya MLA
Cruz, Barbara, C.., Thornton, Stephen, J..
"Teaching Social Studies to English Language Learners".
Edisi :1
New York:
Routledge,
2009.
Text.