Palmer, F. R. (1990). Modality and the English modals. Longman.
Chicagoスタイル(17版)引用形式Palmer, Frank Robert. Modality and the English Modals. London: Longman, 1990.
MLA(9版)引用形式Palmer, Frank Robert. Modality and the English Modals. Longman, 1990.
警告: この引用は必ずしも正確ではありません.