^ (2014). What in the Wild?, Tricycle Press. ISBN 9781582463100 (revised Feb 2023)
^Schwartz, David M. (2014). What in the Wild? : Mysteries of Nature Concealed... and Revealed, Random House Distribution childrens. BiggerBooks. ISBN 9781582463100 (revised Nov 2023)
^ (2013). What in the Wild? : Mysteries of Nature Concealed... and RevealedECampus. ISBN 9781582463100 (revised Sep 2015)
^What In The Wild?: Mysteries Of Nature Concealed...and Revealed.Indigo. ISBN 9781582463100 (revised Jun 2015)