PEURIFOY, R. L., & LEDBETTER, W. B. (1985). Construction planning, equipment and methods.-- Ed.4. McGraw-Hill.
Chicago-čujuhus (17. p.)PEURIFOY, Robert L., juo Wiliiam B. LEDBETTER. Construction Planning, Equipment and Methods.-- Ed.4. New York: McGraw-Hill, 1985.
MLA-čujuhus (9. p.)PEURIFOY, Robert L., juo Wiliiam B. LEDBETTER. Construction Planning, Equipment and Methods.-- Ed.4. McGraw-Hill, 1985.
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