Maldonado-Ensignia, G., González-Ramos, G., Camacho-Puga, E., & Olivos-Rivera, F. J. (2011). Captivity...necessary for the survival of wild homeless animals. Universidad Autónoma de Tamaulipas.
Čikaški stil citiranja (17. izdanje)Maldonado-Ensignia, Gerardo, Germán González-Ramos, Eduardo Camacho-Puga, i Francisco Javier Olivos-Rivera. Captivity...necessary for the Survival of Wild Homeless Animals. Universidad Autónoma de Tamaulipas, 2011.
MLA način citiranja (8. izdanje)Maldonado-Ensignia, Gerardo, et al. Captivity...necessary for the Survival of Wild Homeless Animals. Universidad Autónoma de Tamaulipas, 2011.
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