Meicr, Richard L., author
McGraw-Hill, 1965
Buku Teks
Mason, Edward S., author
Fordham University Press, 1958
Buku Teks
Waterston, Albert, author
John Hopkins University Press, 1969
Buku Teks
Caiden, Naomi, author
John Wiley & Sons, 1974
Buku Teks
edited by James F. Phillips, John A. Ross
Clarendon Press, 1992
Buku Teks