Verhoogen, J. (1970). The Earth: An Introduction to Physical Geology. Holt, Rinehart & Winston.
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Chicago-čujuhus (17. p.)
Verhoogen, John. The Earth: An Introduction to Physical Geology. New York: Holt, Rinehart & Winston, 1970.
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MLA-čujuhus (9. p.)
Verhoogen, John. The Earth: An Introduction to Physical Geology. Holt, Rinehart & Winston, 1970.
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Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.