APA (7th ed.) Citation

Helms, M. W. (1975). Middle America: A culture history of heartland and frontiers. Prentice-Hall.

Chicago Style (17th ed.) Citation

Helms, Mary W. Middle America: A Culture History of Heartland and Frontiers. Englewood Cliffs, New Jersey: Prentice-Hall, 1975.

MLA (9th ed.) Citation

Helms, Mary W. Middle America: A Culture History of Heartland and Frontiers. Prentice-Hall, 1975.