Abram Stephen, author
[American Library association, American Library association], 2007
eBooks
Pemberton, John E., author
Pergamon Press, 1969
Buku Teks
Chandler, G.
Pergamon Press, 1974
Buku Teks
Cobb, Stephen, author
Windcrest Books McGraw-Hill, 1991
Buku Teks
Garton, Stephen
Allen & Unwin, 1990
Buku Teks