Tractor (Romanian Wikipedia)

Wik, Reynold M. (1964), „Henry Ford's Tractors and American Agriculture”, Agricultural History, 38 (2), pp. 79–86, ISSN 0002-1482, accesat în 31 iulie 2025

livinghistoryfarm.org (Global: low place; Romanian: low place)

„Tractors Advance during the Depression” (în engleză). Living History Farm. Arhivat din original la 19 martie 2007. Accesat în 31 iulie 2025.

scienceandsociety.co.uk (Global: low place; Romanian: low place)

„Image of dan albone, english inventor, 1902. by Science & Society Picture Library”. www.scienceandsociety.co.uk. Accesat în 31 iulie 2025.

si.edu (Global: 256^th place; Romanian: 451^st place)

americanhistory.si.edu

„NMAH | Hart Parr #3 Tractor”. americanhistory.si.edu. Accesat în 31 iulie 2025.

theinspiredmedia.com (Global: low place; Romanian: low place)

„From Steam to Gasoline…”. theinspiredmedia.com. Arhivat din original la 24 februarie 2012. Accesat în 31 iulie 2025.

thoughtco.com (Global: 2,170^th place; Romanian: 1,758^th place)

„The Evolution and History of the Farm Tractor That Changed Everything” (în engleză). ThoughtCo. Accesat în 31 iulie 2025.

web.archive.org (Global: 1^st place; Romanian: 1^st place)

„The Froelich Tractor”. www.froelichtractor.com. Arhivat din original la 29 august 2019. Accesat în 31 iulie 2025.
„From Steam to Gasoline…”. theinspiredmedia.com. Arhivat din original la 24 februarie 2012. Accesat în 31 iulie 2025.
„Dan Albone”. Biggleswade History Society. Arhivat din original la 15 martie 2012.
„An Electric Tractor May Be in Your Future” (în engleză). Successful Farming. Arhivat din original la 23 iulie 2022. Accesat în 31 iulie 2025.
„Development of Fendt's e100 electric tractor continues” (în engleză). Grainews. 10 februarie 2021. Arhivat din original la 3 mai 2025. Accesat în 31 iulie 2025.
Brackney, Susan (2 septembrie 2021). „Electric Tractors Are The Future Of Farming” (în engleză). Hobby Farms. Accesat în 31 iulie 2025. ^{[nefuncțională – arhivă]}

worldcat.org (Global: 4^th place; Romanian: 9^th place)

Wik, Reynold M. (1964), „Henry Ford's Tractors and American Agriculture”, Agricultural History, 38 (2), pp. 79–86, ISSN 0002-1482, accesat în 31 iulie 2025

Tractor (Romanian Wikipedia)

agriculture.com (Global: low place; Romanian: low place)

agroline24.ro (Global: low place; Romanian: low place)

archive.ph (Global: 347th place; Romanian: 290th place)

biggleswadehistory.org.uk (Global: low place; Romanian: low place)

books.google.com (Global: 3rd place; Romanian: 8th place)

cnet.com (Global: 447th place; Romanian: 514th place)

electrek.co (Global: 6,480th place; Romanian: low place)

farmcollector.com (Global: low place; Romanian: low place)

froelichtractor.com (Global: low place; Romanian: low place)

gasenginemagazine.com (Global: low place; Romanian: low place)

grainews.ca (Global: low place; Romanian: low place)

hobbyfarms.com (Global: low place; Romanian: low place)

admin.hobbyfarms.com

iptv.org (Global: low place; Romanian: low place)

jstor.org (Global: 23rd place; Romanian: 76th place)

livinghistoryfarm.org (Global: low place; Romanian: low place)

scienceandsociety.co.uk (Global: low place; Romanian: low place)

si.edu (Global: 256th place; Romanian: 451st place)

americanhistory.si.edu

theinspiredmedia.com (Global: low place; Romanian: low place)

thoughtco.com (Global: 2,170th place; Romanian: 1,758th place)

web.archive.org (Global: 1st place; Romanian: 1st place)

worldcat.org (Global: 4th place; Romanian: 9th place)

archive.ph (Global: 347^th place; Romanian: 290^th place)

books.google.com (Global: 3^rd place; Romanian: 8^th place)

cnet.com (Global: 447^th place; Romanian: 514^th place)

electrek.co (Global: 6,480^th place; Romanian: low place)

jstor.org (Global: 23^rd place; Romanian: 76^th place)

si.edu (Global: 256^th place; Romanian: 451^st place)

thoughtco.com (Global: 2,170^th place; Romanian: 1,758^th place)

web.archive.org (Global: 1^st place; Romanian: 1^st place)

worldcat.org (Global: 4^th place; Romanian: 9^th place)