Sepur standar: Perbedaan antara revisi

 

== Bacaan tambahan ==

* {{cite book|last1=Pomeranz|first1=Kenneth|first2=Steven|last2=Topik|year=1999|title=The World that Trade Created: Society, Culture, and World Economy, 1400 to the Present|url=https://archive.org/details/worldthattradecr0000pome|publisher=M.E. Sharpe|location=Armonk, NY|isbn=0-7656-0250-4}}

* {{cite book|last=Puffert|first=Douglas J.|title=Tracks across Continents, Paths through History: The Economic Dynamics of Standardization in Railway Gauge|url=https://archive.org/details/tracksacrosscont0000puff|publisher=University of Chicago Press|year=2009|isbn=978-0-226-68509-0}}