Sistema de sujeción del carril (Spanish Wikipedia)

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Raidabaugh, 1915, p. 5-7. Raidabaugh, G.P. (1915). Origin and Development of the Railway Rail: English and American Wood, Iron and Steel. Kohn & Pollock, Baltimore. ISBN 9781408637654.
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Raidabaugh, 1915, p. 20. Raidabaugh, G.P. (1915). Origin and Development of the Railway Rail: English and American Wood, Iron and Steel. Kohn & Pollock, Baltimore. ISBN 9781408637654.
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Ellis, 2006, p. 211. , Macbeth Spike. Ellis, Iain (2006). Ellis' British Railway Engineering Encyclopaedia. Lulu.com. ISBN 978-1847286437.
Ellis, 2006, p. 114. , Elastic Spike. Ellis, Iain (2006). Ellis' British Railway Engineering Encyclopaedia. Lulu.com. ISBN 978-1847286437.
Sellew, 1915, p. 215-216. Sellew, William (1915). Railway Maintenance Engineering - With Notes on Construction. D. Van Nostrand Company. ISBN 9781445591773.
Solomon, 2001, p. 59–62. Solomon, Brian (2001). Railway Maintenance: The Men and Machines That Keep the Railroads Running. MBI Publishing Company. ISBN 978-0760309759.
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Raidabaugh, 1915, p. 11-12. Raidabaugh, G.P. (1915). Origin and Development of the Railway Rail: English and American Wood, Iron and Steel. Kohn & Pollock, Baltimore. ISBN 9781408637654.
Clark, 1855, p. 280. Clark, Daniel Kinnear (1855). Railway machinery: a treatise on the mechanical engineering of railways: embracing the principles and construction of rolling and fixed plant; illustrated by a series of plates on a large scale, and by numerous engravings on wood, Volume 2. Blackie and Son.
Frederick Smeaton Williams (1852). Our Iron Roads: their history, construction and influences: With numerous illustrations. Ingram. pp. 199-200.

chestofbooks.com

«The Rail Spike and The Locomotive». chestofbooks.com. Scientific American.

issn.org

portal.issn.org

«Workin' on the Railroad». Popular Mechanics (Hearst Magazines) 84 (4): 20-27. October 1945. ISSN 0032-4558.
«Mechanised section gang now lays railroad ties». Popular Science (Bonnier Corporation) 168 (2): 168-9. February 1956. ISSN 0161-7370.

mmrs.co.uk

Craig, 2015. Craig, Colin (2015). «Modern Permanent Way». The Manchester Model Railway Society. Consultado el October 2015.

pandrol.com

«Pandrol - Pandrol - The future of rail fastenings». www.pandrol.com.

railway-technology.com

«AJAX - Dog Screw Railway Fasteners for Rail Tracks With Timber Sleepers», www.railway-technology.com, archivado desde el original el 31 de mayo de 2014, consultado el 16 de enero de 2020 .

sizes.com

«railroad spikes». www.sizes.com.

stanleyhydraulics.com

«Spike Drivers | Stanley Hydraulic». www.stanleyhydraulics.com. Consultado el 23 de diciembre de 2016.

todayinsci.com

«October 18 - Today in Science History». www.todayinsci.com.

vossloh-fastening-systems.de

«vossloh-fastening-systems.com - Home». www.vosslo-fastening-systems.de. Archivado desde el original el 12 de mayo de 2008. Consultado el 16 de enero de 2020.

web.archive.org

«AJAX - Dog Screw Railway Fasteners for Rail Tracks With Timber Sleepers», www.railway-technology.com, archivado desde el original el 31 de mayo de 2014, consultado el 16 de enero de 2020 .
«vossloh-fastening-systems.com - Home». www.vosslo-fastening-systems.de. Archivado desde el original el 12 de mayo de 2008. Consultado el 16 de enero de 2020.

worldcat.org

Bonnett, 2005, p. 65. , 5.10 Rail Fastenings, Baseplates and Pads Bonnett, Clifford F. (2005). Practical Railway Engineering (Imperial College Press (ed. 2) edición). Londres, Reino Unido. ISBN 978-1-86094-515-1. OCLC 443641662.