Anderson, Barry F.
Wadsworth, 1966
Buku Teks
Ali Nina Liche Seniati, author
Indeks, 2005
Buku Teks
Townsend, John C., author
McGraw-Hill , 1953
Buku Teks
Cohen, Morris R.
Harcourt, Brace & World, Inc., 1934
Buku Teks
Kendall, Philip C., author
John Wiley & Sons, 1982
Buku Teks