Christensen,Howard B. (1977). Statistics step by step. Houghton Mifflin.
Chicagoスタイル(17版)引用形式Christensen,Howard B. Statistics Step by Step. Atlanta: Houghton Mifflin, 1977.
MLA(9版)引用形式Christensen,Howard B. Statistics Step by Step. Houghton Mifflin, 1977.
警告: この引用は必ずしも正確ではありません.