APA (7th ed.) Citation

Guballa, C., Guballa, P. B., & Alcaraz, F. C. (2009). Heaven's butterfly: Paruparo ng langit. Anvil.

Chicago Style (17th ed.) Citation

Guballa, Cathy, Pia B. Guballa, and Frances C. Alcaraz. Heaven's Butterfly: Paruparo Ng Langit. Pasig City: Anvil, 2009.

MLA (9th ed.) Citation

Guballa, Cathy, et al. Heaven's Butterfly: Paruparo Ng Langit. Anvil, 2009.