penyunting, William B. Stanley
Airlangga University Press, 1991
Buku Teks
Purwanto, author
Pustaka Pelajar, 2007
Buku Teks
Sugiyono, author
Alfabeta, 2007
Buku Teks
Handari Nawawi, author
Gadjah Mada University Press, 1991
Buku Teks
Blalock, Hubert M., author
RajaGrafindo Persada, 1994
Buku Teks