Sommer, J. A. (1950). School attitudes for youth. Queen's Work.
Chicagoスタイル(17版)引用形式Sommer, Joseph A. School Attitudes for Youth. St. Louis, Mo.: Queen's Work, 1950.
MLA(8版)引用形式Sommer, Joseph A. School Attitudes for Youth. Queen's Work, 1950.
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