Shoppell, R. W. Latest descriptive price list of Shoppell's modern house designs. Co-operative Building Plan Association.
Chicagoスタイル(17版)引用形式Shoppell, R. W. Latest Descriptive Price List of Shoppell's Modern House Designs. New York: Co-operative Building Plan Association.
MLA(8版)引用形式Shoppell, R. W. Latest Descriptive Price List of Shoppell's Modern House Designs. Co-operative Building Plan Association.
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