Eyestone, M. M. (1966). Ilocano pronunciation and memory materials (2nd ed.). Interchurch Language School.
Chicago-referens (17:e uppl.)Eyestone, Maynard M. Ilocano Pronunciation and Memory Materials. 2nd ed. Manila: Interchurch Language School, 1966.
MLA-referens (9:e uppl.)Eyestone, Maynard M. Ilocano Pronunciation and Memory Materials. 2nd ed. Interchurch Language School, 1966.
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