@book{612, author = {Moore, Keith L. and Persaud, T. V. N.}, title = {The developing human :}, publisher = {Saunders,}, year = {2003.}, address = {Philadelphia :}, edition = {7th ed.}, url = {http://www.ebay.com/itm/The-Developing-Human-Clinically-Oriented-Embryology-/171991011404} }