Vincent, Mark, author
London University, 2003
Buku Teks
Koch, Janice, author
Wadsworth , 2012
Buku Referensi
Arends, Richard I., 1990-, author
McGraw-Hill, 2012
Buku Teks
Arends, Richard I., 1990-, author
McGraw-Hill, 1989
Buku Teks
Arends, Richard I., 1990-, author
McGraw-Hill, 2012
Buku Teks