Animales Peligrosos(1st Edition) by GeorgeMckay Paperback, 320 Pages, Published 2013 by Océano Travesía ISBN-13: 978-970-777-295-3, ISBN: 970-777-295-6
Mamíferos Alexandra Volin; asesor GeorgeMckay by GeorgeMckay Paperback, 65 Pages, Published 2003 by Mcgraw-Hill Interamerican ISBN-13: 978-970-10-4165-9, ISBN: 970-10-4165-8