Citazione APA

Iowa, United States, & United States. (1947). The constitution of the state of Iowa, the Declaration of Independence, the Constitution of the United States. State of Iowa.

Stile di citazione Chicago

Iowa, United States, e United States. The Constitution of the State of Iowa, the Declaration of Independence, the Constitution of the United States. Des Moines: State of Iowa, 1947.

Citazione MLA

Iowa, et al. The Constitution of the State of Iowa, the Declaration of Independence, the Constitution of the United States. State of Iowa, 1947.