Harkness, G. (1952). The modern rival of christian faith: An analysis of secularism. Abingdon Press.
Chicago-čujuhus (17. p.)Harkness, Georgia. The Modern Rival of Christian Faith: An Analysis of Secularism. New York: Abingdon Press, 1952.
MLA-čujuhus (9. p.)Harkness, Georgia. The Modern Rival of Christian Faith: An Analysis of Secularism. Abingdon Press, 1952.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.