Sinyal kereta api: Perbedaan antara revisi
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RaFaDa20631 (bicara | kontrib) |
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Baris 131:
== Lihat pula ==
*
* [[Persinyalan kereta api]]
* [[Petak jalan]]
* [[Wesel]]
== Referensi ==
* Armstrong, John (1957). "All About Signals" (Two-article series). [http://www.trains.com/trn/ ''Trains'' Magazine], June and July 1957.
* Calvert, J.B. [https://web.archive.org/web/20060406191541/http://www.du.edu/~jcalvert/railway/railhom.htm#hist "The Origin of the Railway Semaphore."] 2007-05-04.
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