“Allometry Analysis and Physiological Index of Sea Urchin Heliocidaris Crassispina (A. Agassiz, 1864) (Camarodonta, Echinometridae) on the Reef Flat in Tongkeina and Malalayang Dua, Manado, Sulawesi”. 2016. Jurnal Ilmiah PLATAX 4 (2): 45-55. https://doi.org/10.35800/jip.4.2.2016.13774.