APA (7th ed.) Citation

Del Prado, M. G. "What and where is Ibalon/". s.n.

Chicago Style (17th ed.) Citation

Del Prado, Mariano Goyena. "What and Where Is Ibalon/". s.l: s.n.

MLA (9th ed.) Citation

Del Prado, Mariano Goyena. "What and Where Is Ibalon/". s.n.