Prentice-Hall, 1949
Buku Teks
edited by Robert Teviot Livingston and Stanley H. Milberg
Colombia University Press , 1957
Buku Teks
Yoder, Dale, author
Prentice-Hall, 1962
Buku Teks
Lovejoy, Laurence C., author
Aleander Hamilton Institute, 1962
Buku Teks
Yoder, Dale, author
Prentice-Hall, 1984
Buku Teks