Cita APA (7th ed.)

Zablan, Z. C., de Guzman, E. A., & Tabije, T. L. (1996). Differentials in Philippine fertility from the 1990 census. National Statistics office.

Cita Chicago (17th ed.)

Zablan, Zelda C., Eliseo A. de Guzman, i Tita L. Tabije. Differentials in Philippine Fertility from the 1990 Census. Manila: National Statistics office, 1996.

Cita MLA (9th ed.)

Zablan, Zelda C., et al. Differentials in Philippine Fertility from the 1990 Census. National Statistics office, 1996.