APA (7th ed.) Citation

Abella, D. C. (1977). Portfolio I. Milagros Romualdez Abella.

Chicago Style (17th ed.) Citation

Abella, Domingo C. Portfolio I. [place of publication not identified]: Milagros Romualdez Abella, 1977.

MLA (9th ed.) Citation

Abella, Domingo C. Portfolio I. Milagros Romualdez Abella, 1977.