APA

Gibson R., Allman H., Barlow A. & Tyler J.Drawing Animals. London: Usborne.

Chicago

Gibson Ray, Allman Howard, Barlow Amanda and Tyler Jenny.Drawing Animals. London: Usborne.

Harvard

Gibson R., Allman H., Barlow A. and Tyler J.Drawing Animals. London: Usborne.

MLA

Gibson Ray, Allman Howard, Barlow Amanda and Tyler Jenny.London: Usborne. .