Diastari Damayanti, and A. C. Telambanua. “Effectiveness Test of Red Spinach Leaf Extract (Amarathus Tricolor L) As a Substitute for Crystal Violet in Gram Staining of Staphylococcus Aureus Bacteria Morphology”. International Health Sciences Journal, vol. 3, no. 1, Sept. 2025, pp. 79-92, https://ihsjournal.id/index.php/go/article/view/90.