West, P. (1964). Robert Penn Warren - American Writers 44: University of Minnesota Pamphlets on American Writers. University of Minnesota Press.
Cita Chicago Style (17a ed.)West, Paul. Robert Penn Warren - American Writers 44: University of Minnesota Pamphlets on American Writers. Minneapolis, MN: University of Minnesota Press, 1964.
Cita MLA (8a ed.)West, Paul. Robert Penn Warren - American Writers 44: University of Minnesota Pamphlets on American Writers. University of Minnesota Press, 1964.
Precaución: Estas citas no son 100% exactas.