Artikel Jurnal
Mellinkoff, David
[Publisher not identified], 1992
Buku Teks
Garner, Bryan A.
Oxford University Press, 1995
Buku Referensi
Evans, Bergen, 1904-
Random House, 1957
Buku Referensi
Fowler, H.W. [Henry Watson], 1858-1933
New York Oxford University Press 1965
Buku Referensi