Nazaret, F. V., Mortal, D., M., & Regala, D. A. (1977). Working life tables for males and females in the Philippines, 1970. National Census and Statistics Office.
Chicago-referens (17:e uppl.)Nazaret, Francisco V., Dolores Mortal, M, och Dulce A. Regala. Working Life Tables for Males and Females in the Philippines, 1970. Manila: National Census and Statistics Office, 1977.
MLA-referens (9:e uppl.)Nazaret, Francisco V., et al. Working Life Tables for Males and Females in the Philippines, 1970. National Census and Statistics Office, 1977.
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