Fowler, H. W. (Henry Watson), 1858-1933
Oxford University Press, 1983
Buku Referensi
Cohen, J.M. (John Michael), 1903-1989, author
Penguin Books, 1971
Buku Referensi
Cohen, J.M. (John Michael), 1903-1989, author
Allen Lane, 1980
Buku Referensi
compiled and edited by Bruce Overton
Macmillan, 1938
Buku Referensi
Ball, Alan R., author
Macmillan, 1974
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