Fitz-Gibbon, Kate, author
Routledge, 2018
Buku Teks
Marmo, Marinella, author
Sage, 2016
Buku Teks
Sheley, Joseph F., author
Wadsworth, 1987
Buku Teks
Rawlings, Philip, author
Longman, 1999
Buku Teks
Surette, Ray, author
Wadsworth and Cengage Learning, 2011
Buku Teks