APA-čujuhus (7. p.)
Duff, E. Social Order: March 1962. The Institute of Social Order.
Chicago-čujuhus (17. p.)
Duff, Edward. Social Order: March 1962. Saint Louis, EUA: The Institute of Social Order.
MLA-čujuhus (9. p.)
Duff, Edward. Social Order: March 1962. The Institute of Social Order.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.