Shaw, K. (1990). Collins Cobuild English grammar exercises. Collins.
Chicagoスタイル(17版)引用形式Shaw, Katy. Collins Cobuild English Grammar Exercises. London: Collins, 1990.
MLA(9版)引用形式Shaw, Katy. Collins Cobuild English Grammar Exercises. Collins, 1990.
警告: この引用は必ずしも正確ではありません.