Brown, L. R., & Brown, L. R. (1976). Increasing world food output: Problems and prospects. Arno Press.
Dyfyniad Arddull ChicagoBrown, Lester R., and Lester Russell Brown. Increasing World Food Output: Problems and Prospects. New York: Arno Press, 1976.
Dyfyniad MLABrown, Lester R., and Lester Russell Brown. Increasing World Food Output: Problems and Prospects. Arno Press, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.