APA
Robert L.M, Grant U.J. Ricardo Ramiez E. Hotheway W.H, . (1957). Races of Maize in Colombia. Washington D.C: National Academy of Seicnecs.
Chicago
Robert L.M, Grant U.J. Ricardo Ramiez E. Hotheway W.H, . 1957. Races of Maize in Colombia. Washington D.C: National Academy of Seicnecs.
Harvard
Robert L.M, Grant U.J. Ricardo Ramiez E. Hotheway W.H, . (1957). Races of Maize in Colombia. Washington D.C: National Academy of Seicnecs.
MLA
Robert L.M, Grant U.J. Ricardo Ramiez E. Hotheway W.H, . Races of Maize in Colombia. Washington D.C: National Academy of Seicnecs. 1957.
