Association, A. R. (2014). The Invention of the Track Circuit The history of Dr. William Robinson's invention of the track circuit, the fundamental unit which made possible our present automatic block signaling and interlocking systems. Project Gutenberg.
Chicago Style (17th ed.) CitationAssociation, American Railway. The Invention of the Track Circuit The History of Dr. William Robinson's Invention of the Track Circuit, the Fundamental Unit Which Made Possible Our Present Automatic Block Signaling and Interlocking Systems. Project Gutenberg, 2014.
MLA (9th ed.) CitationAssociation, American Railway. The Invention of the Track Circuit The History of Dr. William Robinson's Invention of the Track Circuit, the Fundamental Unit Which Made Possible Our Present Automatic Block Signaling and Interlocking Systems. Project Gutenberg, 2014.