Dajay, C. M. D., & Espina, M. A. A. (2013). The Pagasa Public Observatory and Astronomy Center.
Cita Chicago (17th ed.)Dajay, Camille Mae D., i Mary Ann A. Espina. The Pagasa Public Observatory and Astronomy Center. 2013.
Cita MLA (9th ed.)Dajay, Camille Mae D., i Mary Ann A. Espina. The Pagasa Public Observatory and Astronomy Center. 2013.
Atenció: Aquestes cites poden no estar 100% correctes.