APA (7th ed.) Citation

Simon, T. S., & Posadas, J. A. (2010). How long till September? Adarna House.

Chicago Style (17th ed.) Citation

Simon, Tanya Sevilla, and Jill Arwen Posadas. How Long Till September? [Quezon City: Adarna House, 2010.

MLA (9th ed.) Citation

Simon, Tanya Sevilla, and Jill Arwen Posadas. How Long Till September? Adarna House, 2010.