Trimmer, Joseph F.
The riverside reader; Volume 2
Houghton Miffiln, 1983
 Koleksi Publik
Ferguson, John Alexander
Bibliography of Australia; Volume 2
National Library of Australia, 1977
 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
 Buku Referensi