Anthony, Robert N. (Robert Newton), 1916-2006, author
Harvard University, 1952
Buku Teks
McNulty, James E., author
University of Pennsylvania Press, 1964
Buku Teks
Church, Jeffrey, author
McGraw-Hill, 2000
Buku Teks
Lundgren, Earl F., author
Confield, 1974
Buku Teks
Hicks, Herbert G., author
McGraw-Hill Kogakusha, 1974
Buku Teks