Butt, H. (1978). At the edge of hope. The Seabury Press.
Chicago-čujuhus (17. p.)Butt, Howard. At the Edge of Hope. The Seabury Press, 1978.
MLA-čujuhus (9. p.)Butt, Howard. At the Edge of Hope. The Seabury Press, 1978.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.