Guillermo, R. G., & Agabin, M. E. (2013). A German travels to the north in 1878: Golden Anitos, bird-scaring machines, and the tree of justice. Philippine Studies: Historical and Ethnographic Viewpoints.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGuillermo, Ramon G., और Maria Eliza Agabin. "A German Travels to the North in 1878: Golden Anitos, Bird-scaring Machines, and the Tree of Justice." Philippine Studies: Historical and Ethnographic Viewpoints 2013.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGuillermo, Ramon G., और Maria Eliza Agabin. "A German Travels to the North in 1878: Golden Anitos, Bird-scaring Machines, and the Tree of Justice." Philippine Studies: Historical and Ethnographic Viewpoints, 2013.
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