Hoffman, Paul F. «United Plates of America, The Birth of a Craton: Early Proterozoic Assembly and Growth of Laurentia» (en anglès). Annual Review of Earth and Planetary Sciences, 16, 1988, pàg. 543–603. Bibcode: 1988AREPS..16..543H. DOI: 10.1146/annurev.ea.16.050188.002551.
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Hoffman, Paul F. «United Plates of America, The Birth of a Craton: Early Proterozoic Assembly and Growth of Laurentia» (en anglès). Annual Review of Earth and Planetary Sciences, 16, 1988, pàg. 543–603. Bibcode: 1988AREPS..16..543H. DOI: 10.1146/annurev.ea.16.050188.002551.
