Low, O. (1979). Certificate of proficiency English practice. Edward Arnold.
Chicagoスタイル(17版)引用形式Low, Ona. Certificate of Proficiency English Practice. Londres: Edward Arnold, 1979.
MLA(9版)引用形式Low, Ona. Certificate of Proficiency English Practice. Edward Arnold, 1979.
警告: この引用は必ずしも正確ではありません.