American Society of Civil Engineers. (2020). Pipe ramming (Second edition.). American Society of Civil Engineers. https://doi.org/10.1061/9780784415603
Chicago-referens (17:e uppl.)American Society of Civil Engineers. Pipe Ramming. Second edition. Reston, Virginia: American Society of Civil Engineers, 2020. https://doi.org/10.1061/9780784415603.
MLA-referens (9:e uppl.)American Society of Civil Engineers. Pipe Ramming. Second edition. American Society of Civil Engineers, 2020. https://doi.org/10.1061/9780784415603.
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