APA (7th ed.) Citation

Gatbonton, E. B. (1985). Bastion de San Diego. Intramuros Administration, Ministry of Human Settlements.

Chicago Style (17th ed.) Citation

Gatbonton, Esperanza Bunag. Bastion De San Diego. Manila: Intramuros Administration, Ministry of Human Settlements, 1985.

MLA (9th ed.) Citation

Gatbonton, Esperanza Bunag. Bastion De San Diego. Intramuros Administration, Ministry of Human Settlements, 1985.