Piper, J. (2006). When the darkness will not lift: Doing what we can while we wait for God and joy. Crossway Books.
Chicago-čujuhus (17. p.)Piper, John. When the Darkness Will Not Lift: Doing What We Can While We Wait for God and Joy. Wheaton, Ill.: Crossway Books, 2006.
MLA-čujuhus (9. p.)Piper, John. When the Darkness Will Not Lift: Doing What We Can While We Wait for God and Joy. Crossway Books, 2006.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.