Olford, S. F. (1963). The secret of soul-winning. Moody Press.
Chicago-čujuhus (17. p.)Olford, Stephen F. The Secret of Soul-winning. Moody Press, 1963.
MLA-čujuhus (9. p.)Olford, Stephen F. The Secret of Soul-winning. Moody Press, 1963.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.