Carey, John L., author
Houghton Mifflin, 1977
Buku Teks
Johnson, L. Todd
John Wiley & Sons, 1995
Buku Teks
Keller, I. Wayne
McGraw-Hill, 1966
Buku Teks
Schlatter, Charles F.
John Wiley & Sons, 1960
Buku Teks
Usry, Milton F., author
Erlangga, 1986
Buku Teks