HARPER, W., & HARPER, W. (1976). Statistics W.m. Harper. Macdonald and Evans.
Chicagoスタイル(17版)引用形式HARPER, W.M, , W.M HARPER. Statistics W.m. Harper. Macdonald and Evans, 1976.
MLA(8版)引用形式HARPER, W.M, , W.M HARPER. Statistics W.m. Harper. Macdonald and Evans, 1976.
警告: この引用は必ずしも正確ではありません.