Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Iowa, United States, και 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.

Παραπομπή σε μορφή MLA (8th εκδ.)

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