Engr. Jose Cecilio Espinosa: The PICHE story. The Philippine engineer.
Lua i Stíl Chicago (17ú heag.)"Engr. Jose Cecilio Espinosa: The PICHE Story." The Philippine Engineer .
Lua MLA (9ú heag.)"Engr. Jose Cecilio Espinosa: The PICHE Story." The Philippine Engineer, .
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