APA (7th ed.) Citation

Ron Parra, J. (1984). Variety-environment interactions for maize in Bajio, Mexico. [publisher not identified].

Chicago Style (17th ed.) Citation

Ron Parra, José. Variety-environment Interactions for Maize in Bajio, Mexico. [Place of publication not identified]: [publisher not identified], 1984.

MLA (9th ed.) Citation

Ron Parra, José. Variety-environment Interactions for Maize in Bajio, Mexico. [publisher not identified], 1984.