Spencer, D. H. . .. (1963). English for proficiency. Oxford University Press.
シカゴスタイル引用形Spencer, D H. English for Proficiency. New Delhi: Oxford University Press, 1963.
MLA引用形式Spencer, D H. English for Proficiency. Oxford University Press, 1963.
警告: この引用は必ずしも正確ではありません.