Brown, L. R., & Eckholm, E. P. (1974). By bread alone. Praeger.
Cita Chicago Style (17a ed.)Brown, Lester Russell, y Erik P. Eckholm. By Bread Alone. New York: Praeger, 1974.
Cita MLA (8a ed.)Brown, Lester Russell, y Erik P. Eckholm. By Bread Alone. Praeger, 1974.
Precaución: Estas citas no son 100% exactas.