Tohutoro APA (7th ed.)
ebrary, Inc, & Gradstein, F. M. (2012). The geologic time scale 2012. Elsevier.
Tohutoru Kātū Chicago (17th ed.)
ebrary, Inc, me F. M. Gradstein. The Geologic Time Scale 2012. Amsterdam ; Boston: Elsevier, 2012.
Tohutoro MLA (9th ed.)
ebrary, Inc, me F. M. Gradstein. The Geologic Time Scale 2012. Elsevier, 2012.
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