Iowa. University. Institute of Public Affairs. (1956). Teacher's guide for use with voting in Iowa. s. n.
Citazione stile Chigago Style (17a edizione)Iowa. University. Institute of Public Affairs. Teacher's Guide for Use with Voting in Iowa. Iowa City: s. n, 1956.
Citatione MLA (9a ed.)Iowa. University. Institute of Public Affairs. Teacher's Guide for Use with Voting in Iowa. s. n, 1956.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.