Groyon, R. G. (1995). Procopio Solidum: A Negrense Poet. Philippine Studies.
Citación estilo ChicagoGroyon, Regina G. "Procopio Solidum: A Negrense Poet." Philippine Studies 1995.
Cita MLAGroyon, Regina G. "Procopio Solidum: A Negrense Poet." Philippine Studies, 1995.
Warning: These citations may not always be 100% accurate.