Anggi Hanafiah Syanif, Joni Haryanto, and Elida Ulfiana. “Fulfillment of Sleep Needs in Elderly Insomnia in South Sibolga District, Sibolga City”. Journal Of Nursing Practice 6, no. 1 (October 29, 2022): 67–74. Accessed October 27, 2025. https://www.thejnp.org/index.php/jnp/article/view/196.