Guda, K. R., & Abaya, J. (2001). A tribute to Antonio Zumel: Writer-revolutionary. Philippine Collegian.
Lua i Stíl Chicago (17ú heag.)Guda, Kenneth Roland, agus Jo Abaya. "A Tribute to Antonio Zumel: Writer-revolutionary." Philippine Collegian 2001.
Lua MLA (9ú heag.)Guda, Kenneth Roland, agus Jo Abaya. "A Tribute to Antonio Zumel: Writer-revolutionary." Philippine Collegian, 2001.
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