Cita APA (7a ed.)

Helms, C. R. (1917). Agricultural credits in the United States.

Cita Chicago Style (17a ed.)

Helms, Connie Ray. Agricultural Credits in the United States. 1917.

Cita MLA (8a ed.)

Helms, Connie Ray. Agricultural Credits in the United States. 1917.

Precaución: Estas citas no son 100% exactas.