Harris, Symour E.
MaGraw-Hill Book company Inc. , 1947
Buku Teks
Harris, Seymour E.
McGraw-Hill Book Co., 1947
Buku Teks
Harcourt, Brace & World, Inc., 1961
Buku Teks
Friedland, Seymour.
Prentice-Hall, 1966
Buku Teks
Seymour, Daniel T.
Oryx Press , 1993
Buku Teks