Sinaga, Hotnida, Dwi Suryanto, and Raihan Dary. “The Effect of the Addition of Guava Leaf Extract (Psidium Guajava L.) to Coconut Milk Yoghurt (Niyoghurt) As A Functional Food”. Jurnal Penelitian Pendidikan IPA 9, no. SpecialIssue (December 25, 2023): 585–591. Accessed December 7, 2025. https://jppipa.unram.ac.id/index.php/jppipa/article/view/6261.