Não informado. (1974). AAPG Bulletin: American Association. American Association of Petroleum Geologists.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. AAPG Bulletin: American Association. Tulsa, Okla: American Association of Petroleum Geologists, 1974.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. AAPG Bulletin: American Association. American Association of Petroleum Geologists, 1974.
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