Zablan, Z. C. (1994). State of the art in fertility and mortality analysis: Implications for Philippine demographic research. Population Institute, College of Social Sciences and Philosophy, University of the Philippines.

Zablan, Zelda C. State of the Art in Fertility and Mortality Analysis: Implications for Philippine Demographic Research. Quezon City: Population Institute, College of Social Sciences and Philosophy, University of the Philippines, 1994.

Zablan, Zelda C. State of the Art in Fertility and Mortality Analysis: Implications for Philippine Demographic Research. Population Institute, College of Social Sciences and Philosophy, University of the Philippines, 1994.