(Ingelesez)Egerton, Frank N.. (2007-01). [72:AHOTES2.0.CO;2 «A History of the Ecological Sciences, Part 23: Linnaeus and the Economy of Nature»] Bulletin of the Ecological Society of America 88 (1): 72–88. doi:10.1890/0012-9623(2007)88[72:AHOTES]2.0.CO;2. ISSN0012-9623. (Noiz kontsultatua: 2023-08-14).
Egerton, F. N. (2001). "A history of the ecological sciences: early Greek origins" (PDF). Bulletin of the Ecological Society of America. 82 (1): 93–97. Archived from the original (PDF) on 17 August 2012. Retrieved 29 September 2010
(Ingelesez)Egerton, Frank N.. (2007-01). [72:AHOTES2.0.CO;2 «A History of the Ecological Sciences, Part 23: Linnaeus and the Economy of Nature»] Bulletin of the Ecological Society of America 88 (1): 72–88. doi:10.1890/0012-9623(2007)88[72:AHOTES]2.0.CO;2. ISSN0012-9623. (Noiz kontsultatua: 2023-08-14).
(Ingelesez)Egerton, Frank N.. (2007-01). [72:AHOTES2.0.CO;2 «A History of the Ecological Sciences, Part 23: Linnaeus and the Economy of Nature»] Bulletin of the Ecological Society of America 88 (1): 72–88. doi:10.1890/0012-9623(2007)88[72:AHOTES]2.0.CO;2. ISSN0012-9623. (Noiz kontsultatua: 2023-08-14).