Bautista, Á. P., & Gatbonton, E. B. (2003). Shell ornamentation of La Purísima Concepción church, Guiuan, Eastern Samar. National Commission for Culture and the Arts.
Čikaški stil citiranja (17. izdanje)Bautista, Ángel P., i Esperanza Bunag Gatbonton. Shell Ornamentation of La Purísima Concepción Church, Guiuan, Eastern Samar. Manila: National Commission for Culture and the Arts, 2003.
MLA način citiranja (9. izdanje)Bautista, Ángel P., i Esperanza Bunag Gatbonton. Shell Ornamentation of La Purísima Concepción Church, Guiuan, Eastern Samar. National Commission for Culture and the Arts, 2003.
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