Roper, P. (1986). A Practical guide to groundworks and foundations. International Thomson Pub.
Chicagoスタイル(17版)引用形式Roper, Peter. A Practical Guide to Groundworks and Foundations. London: International Thomson Pub, 1986.
MLA(9版)引用形式Roper, Peter. A Practical Guide to Groundworks and Foundations. International Thomson Pub, 1986.
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