Hartley, B., & Viney, P. Streamline english. departures: Workbook a units 1-40 (23a ed.).
芝加哥风格引文Hartley, Bernard, 与 Peter Viney. Streamline English. Departures: Workbook a Units 1-40. 23a ed.
MLA引文Hartley, Bernard, 与 Peter Viney. Streamline English. Departures: Workbook a Units 1-40. 23a ed.
警告：这些引文格式不一定是100％准确.