Encyclopedia of post-colonial literatures in English; Volume 2
edited by Eugene Benson, L.W. Conolly
Routledge, 1994
 Buku Referensi
The Encyclopedia Americana : volume 1
Grolier, 1994
 Buku Referensi
The Encyclopedia Americana : volume 1
Americana Corporation, 1964
 Buku Referensi
Encyclopedia of microbiology; Volume 1
Joshua Lederberg, editor-in-chief
Academic Press, 1992
 Buku Referensi
Encyclopedia of psychotherapy; Volume 1
editors-in-chief, Michel Hersen, William Sledge
Academic Press, 2002
 Buku Referensi