Cita APA (7a ed.)
Alavéz López, S. (2014). Effect of poró Erythrina poeppigiana (Walpers) O.F. Cook, planted at four spacings on the production maize Zea mays, in an alley cropping system. Universidad de Costa Rica, San José (Costa Rica) CATIE, Turrialba (Costa Rica).
Cita Chicago Style (17a ed.)
Alavéz López, S. Effect of Poró Erythrina Poeppigiana (Walpers) O.F. Cook, Planted at Four Spacings on the Production Maize Zea Mays, in an Alley Cropping System. Universidad de Costa Rica, San José (Costa Rica) CATIE, Turrialba (Costa Rica), 2014.
Cita MLA (9a ed.)
Alavéz López, S. Effect of Poró Erythrina Poeppigiana (Walpers) O.F. Cook, Planted at Four Spacings on the Production Maize Zea Mays, in an Alley Cropping System. Universidad de Costa Rica, San José (Costa Rica) CATIE, Turrialba (Costa Rica), 2014.
Precaución: Estas citas no son 100% exactas.