Alvarez, G. C., & Layo, L. L. (1979). Measuring and predicting access to selected resources and service: A comparative evaluation. The Philippine Review of Business and Economics.
Chicago-referens (17:e uppl.)Alvarez, Gabriel C., och Leda L. Layo. "Measuring and Predicting Access to Selected Resources and Service: A Comparative Evaluation." The Philippine Review of Business and Economics 1979.
MLA-referens (9:e uppl.)Alvarez, Gabriel C., och Leda L. Layo. "Measuring and Predicting Access to Selected Resources and Service: A Comparative Evaluation." The Philippine Review of Business and Economics, 1979.
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