Cole, W. H. (1903). Notes on permanent-way material, platelaying, and points & crossings: With a few remarks on signalling and interlocking (4th ed., rev.). E. & F.N. Spon ; Spon & Chamberlain.
Παραπομπή σε μορφή Chicago (17η εκδ.)Cole, W. H. Notes on Permanent-way Material, Platelaying, and Points & Crossings: With a Few Remarks on Signalling and Interlocking. 4th ed., rev. London : New York: E. & F.N. Spon ; Spon & Chamberlain, 1903.
Παραπομπή σε μορφή MLA (8th εκδ.)Cole, W. H. Notes on Permanent-way Material, Platelaying, and Points & Crossings: With a Few Remarks on Signalling and Interlocking. 4th ed., rev. E. & F.N. Spon ; Spon & Chamberlain, 1903.
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