Rudoffer, S., & Baker, I. N. (1967). Mathematics observed. Hans Freudenthal.
シカゴスタイル引用形Rudoffer, Stephen, , I N. Baker. Mathematics Observed. London: Hans Freudenthal, 1967.
MLA引用形式Rudoffer, Stephen, , I N. Baker. Mathematics Observed. Hans Freudenthal, 1967.
警告: この引用は必ずしも正確ではありません.