SumberĀ :

https://www.babycenter.com/0_posterior-position_1454005.bc

https://journals.lww.com/greenjournal/Fulltext/2000/11000/Occipitoposterior_Position__Associated_Factors_and.19.aspx

https://midwifethinking.com/2016/06/08/in-celebration-of-the-op-baby/

https://www.momjunction.com/articles/ways-to-avoid-having-an-occiput-posterior-position_0082926/#gref

https://spinningbabies.com/learn-more/baby-positions/posterior/