Ryken, L. (1987). Work and leisure in christian perspective. Multnomah.
Chicago-čujuhus (17. p.)Ryken, Leland. Work and Leisure in Christian Perspective. Portland: Multnomah, 1987.
MLA-čujuhus (9. p.)Ryken, Leland. Work and Leisure in Christian Perspective. Multnomah, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.