APA (7e ed.) Bronvermelding

Balisco, R. A. T. (2015). Notes on the Gracious Sea Urchin Tripneustes gratilla (Echinodermata: Echinoidea) in Pag-asa Island, Kalayaan, Palawan, Philippines. The Palawan Scientist.

Chicago (17e ed.) Bronvermelding

Balisco, Rodulf Anthony T. "Notes on the Gracious Sea Urchin Tripneustes Gratilla (Echinodermata: Echinoidea) in Pag-asa Island, Kalayaan, Palawan, Philippines." The Palawan Scientist 2015.

MLA (9e ed.) Bronvermelding

Balisco, Rodulf Anthony T. "Notes on the Gracious Sea Urchin Tripneustes Gratilla (Echinodermata: Echinoidea) in Pag-asa Island, Kalayaan, Palawan, Philippines." The Palawan Scientist, 2015.