Cita APA

Wellhausen, E. J. 1., & Wellhausen, E. J. 1. (1957). Races of maize in Central América. Washington: National Academy of Sciences, National Research Council.

Citación estilo Chicago

Wellhausen, Edwin John 1907-, y Edwin John 1907- Wellhausen. Races of Maize in Central América. Washington: National Academy of Sciences, National Research Council, 1957.

Cita MLA

Wellhausen, Edwin John 1907-, y Edwin John 1907- Wellhausen. Races of Maize in Central América. Washington: National Academy of Sciences, National Research Council, 1957.