by Lytton Strachey
Chatto and Windus, 1951
Buku Teks
Box, John Fisher
John Wiley & Sons, 1978
Buku Teks
Bowen, Catherine Drinker
Little, Brown & Co., 1957
Buku Teks
Ferguson, Kitty, author
Pustaka Utama Grafit, 1995
Buku Teks
edited by Frank A.J.L. James
Institution of Engineering and Technology, 2008
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