Victoria Neufeldt, Andrew N. Sparks, editor
Simon & Schuster, 1989
Buku Referensi
Neufeldt, Victoria, author
Prentice Hall ; Modern English Press, 1993
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Groiler
Grolier Incorporated, 1992
Buku Referensi
Bolander, Donald O., author
Lexicon Publication, 1993
Buku Referensi
G & C Merriam Co., 1961
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