Washington U.S. Department of Health, Education, and Welfare 1955
Buku Teks
Garland , 1993
Buku Teks
Jongsoo, James Lee, author
Palgrave Macmillan, 2006
Buku Teks
Griffith, Ernest S.
London Methuen & Co. 1967,
Buku Teks
Sychev, Victor Feodorovich, author
Badan Litbang dan Diklat Dep. Agama RI, 2008
Buku Teks