Menstrual Period, Late or Missed: References
Wong’s Essentials of Pediatric Nursing, 8th Edition by Marilyn J. Hockenberry, David Wilson Elsevier, 2008. ition.
Lippincott Manual of Nursing Practice, 9th Edition Lippincott Williams & Wilkins 2009
"Missed Menstrual Period: The Causes of Skipped or Late Periods (amenorrhea) on MedicineNet.com." Web. <http://www.medicinenet.com/missed_menstrual_period/symptoms.htm>.
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