Duff, A. (1979). That's life. Cambridge University Press.
Chicago-čujuhus (17. p.)Duff, Alan. That's Life. Cambridge: Cambridge University Press, 1979.
MLA-čujuhus (9. p.)Duff, Alan. That's Life. Cambridge University Press, 1979.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.