NUNN DANIEL. (2019). ALL ABOUT DINOSAURUS - BRACHIOSAURUAS (2015 Ed.). RAINTREE PUBLISHERS.
Cita Chicago (17th ed.)NUNN DANIEL. ALL ABOUT DINOSAURUS - BRACHIOSAURUAS. 2015 Ed. CHICAGO: RAINTREE PUBLISHERS, 2019.
Cita MLA (9th ed.)NUNN DANIEL. ALL ABOUT DINOSAURUS - BRACHIOSAURUAS. 2015 Ed. RAINTREE PUBLISHERS, 2019.
Atenció: Aquestes cites poden no estar 100% correctes.