Style de citation APA (7e éd.)

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.

Style de citation Chicago (17e éd.)

Iowa, United States, et 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.

Style de citation MLA (8e éd.)

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