Cita APA

Helms, M. W. (1975). Middle America: A culture history of heart heartland and frontiers. Englewood Cliffs, N.J.: Prentice Hall.

Citación estilo Chicago

Helms, Mary W. Middle America: A Culture History of Heart Heartland and Frontiers. Englewood Cliffs, N.J.: Prentice Hall, 1975.

Cita MLA

Helms, Mary W. Middle America: A Culture History of Heart Heartland and Frontiers. Englewood Cliffs, N.J.: Prentice Hall, 1975.