evolution from a brown bear to a polar bear - Earth Sciences bibliographies - in Harvard style

In-text: (How Grizzlies Evolved into Polar Bears, 2008)

Your Bibliography: 2008. How Grizzlies Evolved into Polar Bears. [online] Available at: <http://www.pbs.org/wnet/nature/arctic-bears-how-grizzlies-evolved-into-polar-bears/777/> [Accessed 15 March 2015].

In-text: (Skull of Polar Bear, 2010)

Your Bibliography: 2010. Skull of Polar Bear. [image] Available at: <https://beautifullybony.wordpress.com/bone-of-the-month/the-polar-bear/the-skull-biomechanics-of-the-polar-bear/> [Accessed 15 March 2015].

In-text: (Paws, Claws, Ears and Tails, 2015)

Your Bibliography: 2015. Paws, Claws, Ears and Tails. [online] Available at: <http://www.polarbearsinternational.org/about-polar-bears/essentials/paws-claws-ears-and-tails> [Accessed 15 March 2015].

In-text: (Evolution | Polar Bears International, 2015)

Your Bibliography: Polarbearsinternational.org. 2015. Evolution | Polar Bears International. [online] Available at: <http://www.polarbearsinternational.org/about-polar-bears/essentials/evolution> [Accessed 15 March 2015].

In-text: (Evolution and Lamarck, 2015)

Your Bibliography: Spark notes. 2015. Evolution and Lamarck. [online] Available at: <http://www.sparknotes.com/biology/evolution/lamarck/section2.rhtml> [Accessed 21 March 2015].

In-text: (Than, 2012)

Your Bibliography: Than, K., 2012. What is Darwin's Theory of Evolution?. [online] Available at: <http://wwWhat is Darwin's Theory of Evolution?w.livescience.com/474-controversy-evolution-works.html> [Accessed 20 March 2015].