(1990). Linguaphone Intermediate English Course Futher Practice Exercises. Linguaphone Institute Limited.
Chicagoスタイル(17版)引用形式Linguaphone Intermediate English Course Futher Practice Exercises. Linguaphone Institute Limited, 1990.
MLA(8版)引用形式Linguaphone Intermediate English Course Futher Practice Exercises. Linguaphone Institute Limited, 1990.
警告: この引用は必ずしも正確ではありません.