Rourke, John T., author
Brooks/Cole, 1986
Buku Teks
Mansbach, Richard W., author
Houghton Miffiln, 2000
Buku Teks
Friedmann, Wolfgang, 1907-1972, author
Macmillan, 1951
Buku Teks
Rourke, John T., author
McGraw-Hill, 2010
Buku Teks
Rourke, John T., author
McGraw-Hill, 2001
Buku Teks