Blacker, R. (1970). Fifteen plus: School leavers and the outside world.
シカゴスタイル引用形Blacker, Rosamunde. Fifteen Plus: School Leavers and the Outside World. 1970.
MLA引用形式Blacker, Rosamunde. Fifteen Plus: School Leavers and the Outside World. 1970.
警告: この引用は必ずしも正確ではありません.