http://www.ivyroses.com/HumanBody/Skeletal/Skeletal_System.php
http://healthyeating.sfgate.com/effects-nutrition-exercise-muscle-bone-…
http://www.iofbonehealth.org/bone-development-young-people-0
http://www.ehow.com/list_5911033_types-bones-human-body.html
http://www.mananatomy.com/basic-anatomy/types-bone
http://www.ivyroses.com/HumanBody/Skeletal/Joints/Types-of-Joints.php