Herz, John H.
The University of Chicago Press, 1959
Buku Teks
Artikel Jurnal
Griffiths, Martin, author
[publisher not identified], 1992
Buku Teks
Griffiths, Martin, author
Routledge, 1992
Buku Teks
Corbett, Sister Thomas Albert
University of America Press, 1950
Buku Teks