Cita APA (7a ed.)
Hazell, P. B. R. (1985). Sources of increased variability in world cereal production since the 1960s. Wiley.
Cita Chicago Style (17a ed.)
Hazell, Peter B. R. Sources of Increased Variability in World Cereal Production Since the 1960s. Wiley, 1985.
Cita MLA (9a ed.)
Hazell, Peter B. R. Sources of Increased Variability in World Cereal Production Since the 1960s. Wiley, 1985.
Precaución: Estas citas no son 100% exactas.