Tipler, Frank J.
The physics of immortalit: modern cosmology, god, and the surrection of the dead
Doubleday, 1994
 Buku Teks SO
Webster's new collegiate dictionary : fifth edition
G & C Merriam Co., 1947
 Buku Referensi
Early modern philosophy : essential readings with commentary
edited by A.P. Martinich
Blackwell, 2007
 Buku Teks SO
Janus : essays in ancient and modern studies : essays and commentary
by James Mellaart ... [and others] ; edited by Louis L. Orlin
University of Michigan Press, c1975
 Buku Teks SO
Schechner, Sara J.
Comets, popular culture, and the birth of modern cosmology / Sara J. Schechner
Princeton University Press , 1997
 Buku Teks SO