Santos, R. P. (1973). Ang Puting waling-waling: A musico-dance drama in three acts story, libretto and music. University Microfilms.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSantos, Ramon Pagayon. Ang Puting Waling-waling: A Musico-dance Drama in Three Acts Story, Libretto and Music. Michigan: University Microfilms, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSantos, Ramon Pagayon. Ang Puting Waling-waling: A Musico-dance Drama in Three Acts Story, Libretto and Music. University Microfilms, 1973.
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