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Harris, Daniel C. (2010). “Charles David Keeling and the Story of Atmospheric CO2 Measurements”. Analytical Chemistry82 (19): 7865–7870. doi:10.1021/ac1001492. ISSN0003-2700. PMID20536268.
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Keeling, Charles D.; Bacastow, Robert B.; Bainbridge, Arnold E.; Ekdahl Jr., Carl A.; Guenther, Peter R.; Waterman, Lee S.; Chin, John F. S. (1976). “Atmospheric carbon dioxide variations at Mauna Loa Observatory, Hawaii” (英語). Tellus28 (6): 538–551. doi:10.3402/tellusa.v28i6.11322. ISSN0040-2826.
Neftel, A.; Moor, E.; Oeschger, H.; Stauffer, B. (1985). “Evidence from polar ice cores for the increase in atmospheric CO2 in the past two centuries”. Nature315 (6014): 45–47. Bibcode: 1985Natur.315...45N. doi:10.1038/315045a0.
Brown, Horace Tabberer; Escombe, F. (1905). “On the variations in the amount of carbon dioxide in the air of Kew during the years 1898-1901” (英語). Proc. R. Soc. Lond. B76 (507): 118–121. Bibcode: 1905RSPSB..76..118B. doi:10.1098/rspb.1905.0004. ISSN0950-1193.
Neftel, A.; Moor, E.; Oeschger, H.; Stauffer, B. (1985). “Evidence from polar ice cores for the increase in atmospheric CO2 in the past two centuries”. Nature315 (6014): 45–47. Bibcode: 1985Natur.315...45N. doi:10.1038/315045a0.
Harris, Daniel C. (2010). “Charles David Keeling and the Story of Atmospheric CO2 Measurements”. Analytical Chemistry82 (19): 7865–7870. doi:10.1021/ac1001492. ISSN0003-2700. PMID20536268.
Brown, Horace Tabberer; Escombe, F. (1905). “On the variations in the amount of carbon dioxide in the air of Kew during the years 1898-1901” (英語). Proc. R. Soc. Lond. B76 (507): 118–121. Bibcode: 1905RSPSB..76..118B. doi:10.1098/rspb.1905.0004. ISSN0950-1193.
Harris, Daniel C. (2010). “Charles David Keeling and the Story of Atmospheric CO2 Measurements”. Analytical Chemistry82 (19): 7865–7870. doi:10.1021/ac1001492. ISSN0003-2700. PMID20536268.
Keeling, Charles D.; Bacastow, Robert B.; Bainbridge, Arnold E.; Ekdahl Jr., Carl A.; Guenther, Peter R.; Waterman, Lee S.; Chin, John F. S. (1976). “Atmospheric carbon dioxide variations at Mauna Loa Observatory, Hawaii” (英語). Tellus28 (6): 538–551. doi:10.3402/tellusa.v28i6.11322. ISSN0040-2826.