Citazione Stile APA (7a Edizione)

Iowa Dept. of Public Instruction & Parker, J. M. (1944). Social studies: Geography, grades 1-8 ; history, grades 1-6. The State of Iowa.

Citazione stile Chigago Style (17a edizione)

Iowa Dept. of Public Instruction e Jessie M. Parker. Social Studies: Geography, Grades 1-8 ; History, Grades 1-6. Des Monies, Ia: The State of Iowa, 1944.

Citatione MLA (9a ed.)

Iowa Dept. of Public Instruction e Jessie M. Parker. Social Studies: Geography, Grades 1-8 ; History, Grades 1-6. The State of Iowa, 1944.