Becker, Beverley C., author
[American Library association, ], 2002
eBooks
edited by, Sculley Bradley
W.W. Norton, 1967
Buku Teks
Houghton Miffiln, 1958
Buku Teks
edited by Anthony Thorlby
Penguin Books, 1969
Buku Referensi
Fieser, Louis F., author
Van Nostrand Reinhold, 1964
Buku Teks