Cita APA

Gutierrez-Aleman, N., De Boer, A. J., & Hart, R. D. (1986). A bio-economic model of small-ruminant production in the semi-arid tropics of the Northeast region of Brazil. Inglaterra: Elsevier.

Citación estilo Chicago

Gutierrez-Aleman, Nestor, A. J. De Boer, and R. D. Hart. A Bio-economic Model of Small-ruminant Production in the Semi-arid Tropics of the Northeast Region of Brazil. Inglaterra: Elsevier, 1986.

Cita MLA

Gutierrez-Aleman, Nestor, A. J. De Boer, and R. D. Hart. A Bio-economic Model of Small-ruminant Production in the Semi-arid Tropics of the Northeast Region of Brazil. Inglaterra: Elsevier, 1986.