Cita APA

(1981). World English ( Workbook ). Orlando, FL: Harcourt, Brace International.

Chicago Style Citation

World English ( Workbook ). Orlando, FL: Harcourt, Brace International, 1981.

Cita MLA

World English ( Workbook ). Orlando, FL: Harcourt, Brace International, 1981.

Atenció: Aquestes cites poden no estar 100% correctes.