APA (7a ed.)

Goyache, F., Fernández, I., Alvarez, I., Royo, L. J., & Gutiérrez, J. P. (2002). Gestation length in the asturiana de los valles beef cattle breed and its relationship with birth weight and calving ease / F. Goyache ; I. Fernández ; I. Alvarez ...[et al.]. Archivos de Zootécnia, 51(196).