Cita APA (7a ed.)

Harrington, L. (1979). Farmer practices and problems in N. Veracruz. CIMMYT.

Cita Chicago Style (17a ed.)

Harrington, L.W. Farmer Practices and Problems in N. Veracruz. CIMMYT, 1979.

Cita MLA (8a ed.)

Harrington, L.W. Farmer Practices and Problems in N. Veracruz. CIMMYT, 1979.

Cita IICA/CATIE

Harrington, L. 1979. Farmer practices and problems in N. Veracruz. CIMMYT.