Holgate, H. (1961). Exchange arithmetic/5e. Sir Isaac Pitman and sons limited.
シカゴスタイル引用形Holgate, H.C.F. Exchange Arithmetic/5e. London: Sir Isaac Pitman and sons limited, 1961.
MLA引用形式Holgate, H.C.F. Exchange Arithmetic/5e. Sir Isaac Pitman and sons limited, 1961.
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