Healthline. https://www.healthline.com/health/womens-health/pms-symptoms-vs-pregnancy-symptoms#takeaway
Diakses 30 Januari 2020Medicine Net. https://www.medicinenet.com/pms_vs_pregnancy_differences_and_similarities/article.htm
Diakses 30 Januari 2020Mom Junction. https://www.momjunction.com/articles/pms-symptoms-vs-pregnancy-symptoms_00389958/
Diakses 30 Januari 2020