Lombardi, Felix W., author
Prestasi Pustaka, 2005
Buku Teks
Kahn, George N.
Gramedia Pustaka Utama, 1996
Buku Teks
Tanzer, Milt, author
Prentice-Hall, 1996
Buku Referensi
Damodaran, Aswath, author
John Wiley & Sons, 2012
Buku Teks
Levenstern, Mary Kerney
Avery Publ. , 1992
Buku Teks