APA Цитирование

Jan Bell. (1992). Integrated skills (upper intermediate): Workbook with answer key. London: Heineman.

Chicago-стиль цитирования

Jan Bell. Integrated Skills (upper Intermediate): Workbook With Answer Key. London: Heineman, 1992.

MLA-цитирование

Jan Bell. Integrated Skills (upper Intermediate): Workbook With Answer Key. London: Heineman, 1992.

Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.