Cita APA

Philippine National Science Society. (1989). Proceedings of the 55th emerald year anniversity celebration. Philippine National Science Society.

Citación estilo Chicago

Philippine National Science Society. Proceedings of the 55th Emerald Year Anniversity Celebration. Taguig, Metro Manila: Philippine National Science Society, 1989.

Cita MLA

Philippine National Science Society. Proceedings of the 55th Emerald Year Anniversity Celebration. Philippine National Science Society, 1989.