Gaya APA
Barr,Robert, ., Shermis, J, L, B, S. (2003).
Hakekat studi sosial (The natural of social studies) .
Bandung:
Alfabeta.
Gaya MLA
Barr,Robert, ., Shermis, James, L., Barth,, Samuel.
"Hakekat studi sosial (The natural of social studies)".
Bandung:
Alfabeta,
2003.
Textbook.