“Analysis of total flavonoid and phenol content from the combination of red spinach (Amaranthus tricolor L.) ethanolic extract and chrysanthemum flower (Chrysanthemum morifolium) ethanolic extract as a potential anti-anemic”, JPKI, vol. 9, no. 1, pp. 37–48, Jun. 2023, doi: 10.17509/jpki.v9i1.164.