Regidor y Jurado, A. M., & Masoni, J. W. T. Commercial progress in the Philippine Islands. Photoduplication Service, Library of Congress.
Chicago-viite (17. p.)Regidor y Jurado, Antonio Maria, ja J. Warren T. Masoni. Commercial Progress in the Philippine Islands. Washington, D.C: Photoduplication Service, Library of Congress.
MLA-viite (9. p.)Regidor y Jurado, Antonio Maria, ja J. Warren T. Masoni. Commercial Progress in the Philippine Islands. Photoduplication Service, Library of Congress.
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