-. (1986). Builders: Of the ancient world. National Geographic Society.
Chicago-čujuhus (17. p.)-. Builders: Of the Ancient World. Washington: National Geographic Society, 1986.
MLA-čujuhus (9. p.)-. Builders: Of the Ancient World. National Geographic Society, 1986.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.