APA (7th ed.) Citation

Castelo, L. T. (1977). This is the Philippines. Melencio M. Castelo.

Chicago Style (17th ed.) Citation

Castelo, Lea T. This Is the Philippines. Metro Manila: Melencio M. Castelo, 1977.

MLA (9th ed.) Citation

Castelo, Lea T. This Is the Philippines. Melencio M. Castelo, 1977.