Encyclopedia of post-colonial literatures in English; Volume 1
edited by Eugene Benson and L.W. Conolly
Routledge, 1994
 Buku Referensi
Funk & Wagnalls new encyclopedia; Volume 2, American English to assiniboine
Funk & Wagnalls, 1983
 Buku Referensi
Encyclopedia of knowledge : volume 2
Grolier Incorporated, 1991
 Buku Referensi
The Encyclopedia Americana : volume 2
Grolier, 1994
 Buku Referensi
Encyclopedia of bioethics : volume 2
Warren Thomas Reich, editor in chief
Simon & Schuster Macmillan, 1995
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