Touliatos, John, author
Iowa State University Press , 1988
Buku Teks
Meyer, Evelyn E.
World Health Organization, 1975
Buku Teks
Gregorios, Paulos
World Council of Churches, 978.
Buku Teks
Brady, Emily, editor
Springer, 2012
eBooks
edited by Moryteza Honari and Thomas Boleyn
Routledge, 1999
Buku Teks