edited by Alan Ned Sabrosky ; foreword by Charles F. Doran
Westview Press, 1988
Buku Teks
Beer, Francis A
Halt, Rinehart, 1970
Buku Teks
Buku Teks
edited by Robert W. Tucker, Charles B. Keely and Linda Wrigley
Westview Press, 1992
Buku Teks
Jordan, Amos A., author
Praeger, 1962
Buku Teks