Gwekoh, S. H. (1974). First Pope in the Philippines, his Holiness Paul VI: The historic visit in 1970. National Book Store, Inc.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGwekoh, Sol H. First Pope in the Philippines, His Holiness Paul VI: The Historic Visit in 1970. Manila: National Book Store, Inc, 1974.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGwekoh, Sol H. First Pope in the Philippines, His Holiness Paul VI: The Historic Visit in 1970. National Book Store, Inc, 1974.
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