Morton, John F. «The impact of climate change on smallholder and subsistence agriculture» (en anglès). Proceedings of the National Academy of Sciences, 104, 50, 11-12-2007, pàg. 19680–19685. DOI: 10.1073/pnas.0701855104. ISSN: 0027-8424. PMC: 2148357. PMID: 18077400.
Bita, Craita E.; Gerats, Tom «Plant tolerance to high temperature in a changing environment: scientific fundamentals and production of heat stress-tolerant crops». Frontiers in Plant Science, 4, 2013, pàg. 273. DOI: 10.3389/fpls.2013.00273. ISSN: 1664-462X. PMC: 3728475. PMID: 23914193.
Morton, John F. «The impact of climate change on smallholder and subsistence agriculture» (en anglès). Proceedings of the National Academy of Sciences, 104, 50, 11-12-2007, pàg. 19680–19685. DOI: 10.1073/pnas.0701855104. ISSN: 0027-8424. PMC: 2148357. PMID: 18077400.
Bita, Craita E.; Gerats, Tom «Plant tolerance to high temperature in a changing environment: scientific fundamentals and production of heat stress-tolerant crops». Frontiers in Plant Science, 4, 2013, pàg. 273. DOI: 10.3389/fpls.2013.00273. ISSN: 1664-462X. PMC: 3728475. PMID: 23914193.
Waters, Tony. The persistence of subsistence agriculture : life beneath the level of the marketplace. Lexington Books, 2008. ISBN 978-0-7391-5876-0. OCLC839303290.
Morton, John F. «The impact of climate change on smallholder and subsistence agriculture» (en anglès). Proceedings of the National Academy of Sciences, 104, 50, 11-12-2007, pàg. 19680–19685. DOI: 10.1073/pnas.0701855104. ISSN: 0027-8424. PMC: 2148357. PMID: 18077400.
Bita, Craita E.; Gerats, Tom «Plant tolerance to high temperature in a changing environment: scientific fundamentals and production of heat stress-tolerant crops». Frontiers in Plant Science, 4, 2013, pàg. 273. DOI: 10.3389/fpls.2013.00273. ISSN: 1664-462X. PMC: 3728475. PMID: 23914193.