Vivas, J. (2022). Saving emilianum: Spared from extinction, the new orchid variant honors the late philanthropist Don Emilio T. Yap. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVivas, Jules. "Saving Emilianum: Spared from Extinction, the New Orchid Variant Honors the Late Philanthropist Don Emilio T. Yap." Manila Bulletin 2022.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVivas, Jules. "Saving Emilianum: Spared from Extinction, the New Orchid Variant Honors the Late Philanthropist Don Emilio T. Yap." Manila Bulletin, 2022.
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