Foundation Center. (1987). National data book (11th ed.). Foundation Center.
Chicago-čujuhus (17. p.)Foundation Center. National Data Book. 11th ed. New York: Foundation Center, 1987.
MLA-čujuhus (9. p.)Foundation Center. National Data Book. 11th ed. Foundation Center, 1987.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.