(2006). FACTS AT YOUR FINGERTIPS: MAMMALS. BROWN BEAR BOOKS.
Cita Chicago (17th ed.)FACTS AT YOUR FINGERTIPS: MAMMALS. USA: BROWN BEAR BOOKS, 2006.
Cita MLA (9th ed.)FACTS AT YOUR FINGERTIPS: MAMMALS. BROWN BEAR BOOKS, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.