Kennedy, W., Cobban, W., & Landman, N. (2001). A revision of the turonian members of the ammonite subfamily collignoniceratinae from the United States western interior and gulf coast.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKennedy, W., W. Cobban, और N. Landman. A Revision of the Turonian Members of the Ammonite Subfamily Collignoniceratinae from the United States Western Interior and Gulf Coast. 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKennedy, W., et al. A Revision of the Turonian Members of the Ammonite Subfamily Collignoniceratinae from the United States Western Interior and Gulf Coast. 2001.
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