Helen Dwight Reid Educational Foundation. (1990). Perspectives on political science. Heldref Publications.
Chicago-čujuhus (17. p.)Helen Dwight Reid Educational Foundation. Perspectives on Political Science. Washington, D.C.: Heldref Publications, 1990.
MLA-čujuhus (9. p.)Helen Dwight Reid Educational Foundation. Perspectives on Political Science. Heldref Publications, 1990.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.