Wahbi Abdulqader Salman Al-Hamdany, و May Khalil Gaffar. "A Comparison Effect of Dysmenorrhea and Secondary Amenorrhea in the Concentration of Some Biochemical and Some Hormones in Women in Tikrit City". Tikrit Journal of Pure Science, م 24, عدد 2, أبريل، 2019, ص 37-42, doi:10.25130/tjps.v24i2.349.