Pfeiffer, L. S. (2000). Hidden sources: Family history in unlikely places. Ancestry.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPfeiffer, Laura Szucs. Hidden Sources: Family History in Unlikely Places. Orem, Utah: Ancestry, 2000.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPfeiffer, Laura Szucs. Hidden Sources: Family History in Unlikely Places. Ancestry, 2000.
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