Magee, Stephen P.
Addison-Wesley , 1980
Buku Teks
edited by Roy Harrod
Martin Press, 1965
Buku Teks
Marcus, Edward, author
Pitman, 1965
Buku Teks
Kreinin, Mordechai Elihau, author
Harcourt Brace Jovanovich, c1971
Buku Teks
Coppock, Joseph D., author
McGraw-Hill Book Company, Inc., 1962
Buku Teks