Crystal, D. (1984). Who cares about english usage. penguin.
Chicagoスタイル(17版)引用形式Crystal, David. Who Cares About English Usage. middlesex: penguin, 1984.
MLA(9版)引用形式Crystal, David. Who Cares About English Usage. penguin, 1984.
警告: この引用は必ずしも正確ではありません.