Djanasz, Suzanne C. De, author
McGraw Hil , 2012
Buku Teks
Yoder, Dale, author
Prentice-Hall, 1962
Buku Teks
Budd, John W., author
McGraw-Hill, 2005
Buku Teks
Lovejoy, Laurence C., author
Aleander Hamilton Institute, 1962
Buku Teks
Yoder, Dale, author
Prentice-Hall, 1984
Buku Teks