Geiger, M. J. (1960). The Serra Trail in picture and story. Franciscan Fathers of California.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGeiger, Maynard J. The Serra Trail in Picture and Story. [Santa Barbara? Calif.: Franciscan Fathers of California, 1960.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGeiger, Maynard J. The Serra Trail in Picture and Story. Franciscan Fathers of California, 1960.
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