Cita APA (7a ed.)

Bettencourt, E., & Konopka, J. (1990). Cereals: Avena, hordeum, millets, oryza, secale, sorghum, triticum, zea and pseudocereals. IBPGR.

Cita Chicago Style (17a ed.)

Bettencourt, E., y J. Konopka. Cereals: Avena, Hordeum, Millets, Oryza, Secale, Sorghum, Triticum, Zea and Pseudocereals. Rome: IBPGR, 1990.

Cita MLA (8a ed.)

Bettencourt, E., y J. Konopka. Cereals: Avena, Hordeum, Millets, Oryza, Secale, Sorghum, Triticum, Zea and Pseudocereals. IBPGR, 1990.