Concepcion, M. B., & Smith, P. C. (1977). The demographic situation in the Philippines: An assessment in 1977. East-West Center.
Lua i Stíl Chicago (17ú heag.)Concepcion, Mercedes B., agus Peter Colin Smith. The Demographic Situation in the Philippines: An Assessment in 1977. Honolulu: East-West Center, 1977.
Lua MLA (9ú heag.)Concepcion, Mercedes B., agus Peter Colin Smith. The Demographic Situation in the Philippines: An Assessment in 1977. East-West Center, 1977.
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