Mautz, R.K., author
John Wiley & Sons, 1967
Buku Teks
Jain, Rajendra K., author
Khanna Publishers, 1983
Buku Teks
Reerink, F.O.
Bilthoven, 1992
Buku Teks
Bergamini, David, author
Time Incorporated, 1963
Buku Referensi
Nursi, Bediuzzaman Said, author
Prenada Media, 2004
Buku Teks