Lorenza, Y. ., D. . Alyaumi, Yustina, A. . Hamidi, A. . Saputra, and . I. . Hariansyah. “PENENTUAN KADAR PLASTICY RETENTION INDEX (PRI) MENURUT STANDARD INDONESIAN (SIR)”. Prosiding Seminar Nasional Biologi, vol. 1, no. 1, Sept. 2021, pp. 617-23, doi:10.24036/prosemnasbio/vol1/77.