Axelrod, D. I. (1998). The oligocene haynes creek flora of eastern Idaho. University of California Press.
Tohutoru Kātū Chicago (17th ed.)Axelrod, Daniel I. The Oligocene Haynes Creek Flora of Eastern Idaho. Berkeley: University of California Press, 1998.
Tohutoro MLA (9th ed.)Axelrod, Daniel I. The Oligocene Haynes Creek Flora of Eastern Idaho. University of California Press, 1998.
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