edited by Harry W. Karn, B. von Haller Gilmer
McGraw-Hill, 1962
Buku Teks
Gilmer, B. von Haller (Beverly von Haller), 1909-1994
McGraw-Hill, 1977
Buku Teks
edited by Edwin A. Fleishman
Dorsey Press, 1967
Buku Teks
Tiffin, Joseph
Prentice-Hall, 1958
Buku Teks
McCormick, Ernest James
Prentice-Hall, 1984
Buku Teks