EASSTON, L. B. (1981). Express Ways A Basal Language Program Level 4. The Economy Company.
Chicagoスタイル(17版)引用形式EASSTON, Lois Brown. Express Ways A Basal Language Program Level 4. The Economy Company, 1981.
MLA(8版)引用形式EASSTON, Lois Brown. Express Ways A Basal Language Program Level 4. The Economy Company, 1981.
警告: この引用は必ずしも正確ではありません.