edited by Louis Shuster and Louis Shuster
Little, Brown, 1962
Buku Teks
Wilson, Andrew, author
Brown, 1968
Buku Teks
Hitner, Henry, author
McGraw-Hill, 1999
Buku Teks
Bowman, W.C., author
Blackwell, 1980
Buku Teks
Burgen, A.S.V., author
Oxford University Press, 1972
Buku Teks