Gaya APA
Lauer, R, H., Lauer, J, C. (2006).
Social Problems and The Quality of Life (Ed.10.--).
America:
McGraw-Hill.
Gaya MLA
Lauer, Robert, H.., Lauer, Jeanette, C..
"Social Problems and The Quality of Life".
Ed.10.--
America:
McGraw-Hill,
2006.
Buku.