Marta Amat, Xavier Manteca, Valentina M. Mariotti, José Luís Ruiz de la Torre, Jaume Fatjó: Aggressive Behaviour in the English Cocker Spaniel. In: Journal of Veterinary Behavior: Clinical Applications and Research. Bd. 4, Nr. 3, 2009, ISSN1558-7878, S. 111–117, doi:10.1016/j.jveb.2008.08.010.
Anthony L. Podberscek, James A. Serpell: The English Cocker Spaniel: preliminary findings on aggressive behaviour. In: Applied Animal Behaviour Science. Bd. 47, 1996, ISSN0168-1591, S. 75–89, doi:10.1016/0168-1591(95)01012-2.
Marta Amat, Xavier Manteca, Valentina M. Mariotti, José Luís Ruiz de la Torre, Jaume Fatjó: Aggressive Behaviour in the English Cocker Spaniel. In: Journal of Veterinary Behavior: Clinical Applications and Research. Bd. 4, Nr. 3, 2009, ISSN1558-7878, S. 111–117, doi:10.1016/j.jveb.2008.08.010.
Anthony L. Podberscek, James A. Serpell: The English Cocker Spaniel: preliminary findings on aggressive behaviour. In: Applied Animal Behaviour Science. Bd. 47, 1996, ISSN0168-1591, S. 75–89, doi:10.1016/0168-1591(95)01012-2.