R. Febtrina and W. Febriana, “GUIDED IMAGERY RELAXATION TECHNIQUES REDUCE PATIENT’S PAIN POST ATTACK HEART [TEKNIK RELAKSASI IMAJINASI TERBIMBING (GUIDED IMAGERY) MENURUNKAN NYERI PASIEN PASCA SERANGAN JANTUNG]”, NC, vol. 5, no. 2, pp. 41–49, Jun. 2019.