Gunglo Dagiti Mannurat Iti Iluko (GUMIL) & Duque, R. A. (1992). GUMIL Filipinas directory of Ilocano writers. El Nino Pub. House.
Chicago Style aipamenaGunglo Dagiti Mannurat Iti Iluko (GUMIL) and Reynaldo A. Duque. GUMIL Filipinas Directory of Ilocano Writers. Manila: El Nino Pub. House, 1992.
MLA aipamenaGunglo Dagiti Mannurat Iti Iluko (GUMIL) and Reynaldo A. Duque. GUMIL Filipinas Directory of Ilocano Writers. El Nino Pub. House, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.