HS, Dian, and Syamsul Lubis. “Terumbu Karang Taman Wisata Perairan Pulau Pieh Sumatera Barat”. Jurnal Airaha 7, no. 02 (December 31, 2018): 070 - 076. Accessed January 24, 2019. http://jurnalairaha.org/index.php/airaha/article/view/93.