Titiek Triwidodo, author
Gramedia Widiasarana Indonesia, 2004
Buku Teks
Sedarmayanti, author
Mandar Maju, 1997
Buku Teks
Cohen, William, author
Amacom, American Management Association., 1986
Buku Teks
Artikel Jurnal
Lamuddin Finoza, author
Diksi Insan Mulia, 1991
Buku Teks