Glatfelter, C. H. (1990). The Pennsylvania Germans: A brief account of their influence on Pennsylvania. University Park, Pa..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGlatfelter, Charles Henry. The Pennsylvania Germans: A Brief Account of Their Influence on Pennsylvania. University Park, Pa., 1990.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGlatfelter, Charles Henry. The Pennsylvania Germans: A Brief Account of Their Influence on Pennsylvania. University Park, Pa., 1990.
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