Oregon Public Broadcasting, Northwest Interpretive Association, & Newman, J. (1998). Ice age flood: Catastrophic transformation of the west. Northwest Interpretive Association ; Oregon Public Broadcasting.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOregon Public Broadcasting, Northwest Interpretive Association, और Jim Newman. Ice Age Flood: Catastrophic Transformation of the West. Seattle, WA : Portland, OR: Northwest Interpretive Association ; Oregon Public Broadcasting, 1998.
एमएलए (8वां संस्करण) प्रशस्ति पत्रOregon Public Broadcasting, et al. Ice Age Flood: Catastrophic Transformation of the West. Northwest Interpretive Association ; Oregon Public Broadcasting, 1998.
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