Roberts, Harold S.
University of Hawaii Press, 1970
Buku Teks
Carrell, Michael R., author
Prentice-Hall, 2001
Buku Teks
Committee Reports, 1974
Buku Teks
Strecker, David E., author
CRC Press Taylor & Francis Group, 2011
Buku Teks
Dodd, Walter Fairleigh, 1880-1960, author
West Publishing, 1949
Buku Teks