Iffah, U. (2021) “The Influence of Acupressure Li4 and Sp6 Techniques to the Endorphins Level And Progress of Labor in Period I Active Phase”, Jurnal Ilmiah PANNMED (Pharmacist, Analyst, Nurse, Nutrition, Midwivery, Environment, Dentist), 16(1), pp. 229–234. doi: 10.36911/pannmed.v16i1.1055.