Manik, D. M. “FACTORS ASSOCIATED WITH THE PERFORMANCE OF FAMILY PLANNING FIELD OFFICERS IN PROVIDING KB SERVICES IN SAMOSIR DISTRICT YEAR 2023”. TOUR HEALTH JOURNAL, vol. 2, no. 4, Dec. 2023, pp. 239-47, https://tourjurnal.akupuntour.com/index.php/tourhealthjournal/article/view/124.