Miller, Audrey
Academic Press , 1992
Buku Teks
Sykes, Peter
Longmans, 1966
Buku Referensi
Schwarzenbach, Rene P.
A. Wiley-Interscience Publication, 1993
Buku Teks
Hammett, Louis P.
McGraw-Hill Kogakusha, 1970
Buku Teks
Beyer, Hans
[Publisher not identified], [Date of publication not identified]
Buku Teks