V. Lumantow, Hosea Jaya Edy, and Jainer Pasca Siampa, “FORMULASI DAN PENENTUAN NILAI SPF KRIM TABIR SURYA EKSTRAK KULIT BUAH LEMON SUANGGI (Citrus limon (L.) Burm. f.) SECARA IN VITRO”, PHA, vol. 12, no. 3, pp. 338–349, Aug. 2023.