Pescatore, Pierre
A.W. Sijthoff, 1974
Buku Teks
Duff, Lois, author
Longman, 1997
Buku Teks
Kapteyn, P.J.G., author
Sweet and Maxwell, 1973
Buku Teks
Bedjaoui, Mohammed, author
Gunung Agung, 1983
Buku Teks
Ferguson, Wallace K., author
Sir Isaac Pitman & Sons, [date of publication not identified]
Buku Teks