Kukuh Feryana, I Wayan, et al. “Refining of Mackerel Fish Oil from Fish Meal Processing Byproduct With Alkali Neutralization”. Jurnal Pengolahan Hasil Perikanan Indonesia, vol. 17, no. 3, Jan. 2015, pp. 206-13, https://doi.org/10.17844/jphpi.v17i3.8907.