Hill, I. (2013). Urban animals of washington d.c. Star Bright Books.
Cita Chicago (17th ed.)Hill, Isabel. Urban Animals of Washington D.c. Cambridge: Star Bright Books, 2013.
Cita MLA (9th ed.)Hill, Isabel. Urban Animals of Washington D.c. Star Bright Books, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.