(1990). Linguaphone Intermediate English Course Programmes 1-10. Linguaphone Institute Limited.
Chicagoスタイル(17版)引用形式Linguaphone Intermediate English Course Programmes 1-10. Linguaphone Institute Limited, 1990.
MLA(8版)引用形式Linguaphone Intermediate English Course Programmes 1-10. Linguaphone Institute Limited, 1990.
警告: この引用は必ずしも正確ではありません.