Pregnancy: Signs of Early Pregnancy: References

Bastian, L. et al. Clinical manifestations and diagnosis of early pregnancy. Accessed April 2, 2014 from http://www.UpToDate.com.

Cunningham, F., K. Leveno, S. Bloom, J. Hauth, L. Gilstrap, K. Wenstrom. Williams Obstetrics. 22nd ed. The McGraw Hill Companies, Inc. 2008. Accessed December 26, 2009 from http://www.accessmedicine.com.

Gibbs, R., B. Karlan, A. Haney, I. Nygaard. Danforth’s Obstetrics and Gynecology. 9th ed. Lippincott Williams and Wilkins, 2008. Accessed on December 26, 2009 from http://www.ovidsp.tx.ovid.com.

Lockwood, C. Guidelines for Perinatal Care. 7th ed. AAP and ACOG. 2012.