Johnston, O. (2006). New Opportunities; education for life: Elementary language powerbook. Longman.
Chicagoスタイル(17版)引用形式Johnston, Olivia. New Opportunities; Education for Life: Elementary Language Powerbook. England: Longman, 2006.
MLA(9版)引用形式Johnston, Olivia. New Opportunities; Education for Life: Elementary Language Powerbook. Longman, 2006.
警告: この引用は必ずしも正確ではありません.