Gilbert, Scott F. Developmental Biology. Tenth edition. Sunderland, MA, USA: Sinauer Associates, Inc. Publishers, 2014. Print.
Lodish, Harvey F. Molecular Cell Biology. Ninth edtion. New York: Macmillan International Higher Education, 2021. Web. <https://ebookcentral.proquest.com/lib/uea/detail.action?docID=6499946>.
Wolpert, L., Cheryll Tickle, and Alfonso Martinez Arias. Principles of Development. Fifth edition. Oxford, United Kingdom: Oxford University Press, 2015. Print.