Schweitzer, A. (1961). Civilization and ethics. Unwin.
Chicago-čujuhus (17. p.)Schweitzer, Albert. Civilization and Ethics. London: Unwin, 1961.
MLA-čujuhus (9. p.)Schweitzer, Albert. Civilization and Ethics. Unwin, 1961.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.