Bridges, R. (1920). From silver to steel: The romance of the Broken Hill Proprietary. George Robertson.
Chicago-viite (17. p.)Bridges, Roy. From Silver to Steel: The Romance of the Broken Hill Proprietary. Melbourne: George Robertson, 1920.
MLA-viite (8. p.)Bridges, Roy. From Silver to Steel: The Romance of the Broken Hill Proprietary. George Robertson, 1920.
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