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At the Water's Edge: Fish with Fingers, Whales with Legs, and How Life Came Ashore but Then Went Back to Sea déning Carl Zimmer ISBN 0-684-83490-1

Marine Mammals: Evolutionary Biology Déning Annalisa Berta, James L. Sumich, lana Kit M. Kovacs

In Search of Ancient Oregon: A Geological and Natural History Déning Ellen Morris Bishop

Whales of the West Coast Déning David A E Spalding

Encyclopedia of Marine Mammals by William F. Perrin, Bernd Wursig, lan J. G.M. Thewissen

Aquagenesis: The Origin and Evolution of Life in the Sea Déning Richard Ellis

The New Encyclopaedia Britannica Déning Encyclopaedia Britannica, inc, Robert McHenry ISBN 0-85229-633-9

Grzimek's Animal Life Encyclopedia Déning Bernhard Grzimek, Neil Schlager, Donna Olendorf, lan Melissa McDade, saking Kebon Binatang Amérika kaliyan Asosiasi Aquarium. ISBN 0-7876-5791-3