Steffen, Will; Crutzen, Paul J.; McNeill, John R.. (2007/12). [614:TAAHNO2.0.CO;2/The-Anthropocene--Are-Humans-Now-Overwhelming-the-Great-Forces/10.1579/0044-7447(2007)36[614:TAAHNO]2.0.CO;2.full «The Anthropocene: Are Humans Now Overwhelming the Great Forces of Nature»] AMBIO: A Journal of the Human Environment 36 (8): 614–621. doi:10.1579/0044-7447(2007)36[614:TAAHNO]2.0.CO;2. ISSN0044-7447. (Noiz kontsultatua: 2021-03-13).
Steffen, Will; Crutzen, Paul J.; McNeill, John R.. (2007/12). [614:TAAHNO2.0.CO;2/The-Anthropocene--Are-Humans-Now-Overwhelming-the-Great-Forces/10.1579/0044-7447(2007)36[614:TAAHNO]2.0.CO;2.full «The Anthropocene: Are Humans Now Overwhelming the Great Forces of Nature»] AMBIO: A Journal of the Human Environment 36 (8): 614–621. doi:10.1579/0044-7447(2007)36[614:TAAHNO]2.0.CO;2. ISSN0044-7447. (Noiz kontsultatua: 2021-03-13).
Steffen, Will; Crutzen, Paul J.; McNeill, John R.. (2007/12). [614:TAAHNO2.0.CO;2/The-Anthropocene--Are-Humans-Now-Overwhelming-the-Great-Forces/10.1579/0044-7447(2007)36[614:TAAHNO]2.0.CO;2.full «The Anthropocene: Are Humans Now Overwhelming the Great Forces of Nature»] AMBIO: A Journal of the Human Environment 36 (8): 614–621. doi:10.1579/0044-7447(2007)36[614:TAAHNO]2.0.CO;2. ISSN0044-7447. (Noiz kontsultatua: 2021-03-13).