Agarwal, Pooja, et al. “Understanding Environmental and Social Reasons Towards Abnormal Menstruation Cycle in Indian Women”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 17, no. 1, Nov. 2014, pp. 381-6, https://www.gssrr.org/JournalOfBasicAndApplied/article/view/3040.