Hughes, Edward, author
Longmans, 1970
Buku Teks
Borowitz, Sydney, author
Addison-Wesley, 1966
Buku Teks
Alexander Joseph...[et.al.]
John Wiley & Sons, 1978
Buku Teks
Bolton, W. (William), 1933-, author
McGraw-Hill, 1976
Buku Teks
Robertson, Barry C.
John Wiley & Sons, 1981
Buku Teks