Kaligis, G. J. Fontje. 2019. “Seasonal Activity of Metabolic Enzymes of Littorina Littorea (Gastropoda: Mollusca)”. Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati 14 (3):156-65. https://doi.org/10.24002/biota.v14i3.2578.