Lua APA (7ú heag.)

Aspillera, P. S. (1968). The evils of regionalism. Philippine Collegian.

Lua i Stíl Chicago (17ú heag.)

Aspillera, Paraluman S. "The Evils of Regionalism." Philippine Collegian 1968.

Lua MLA (9ú heag.)

Aspillera, Paraluman S. "The Evils of Regionalism." Philippine Collegian, 1968.

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