Special English workbook. (1972). Special English workbook: A list of words used in the Voice of America's radio broadcasts in special English: Special English Word Book. Washington: VOA.
Trích dẫn kiểu ChicagoSpecial English workbook. Special English Workbook: A List of Words Used in the Voice of America's Radio Broadcasts in Special English: Special English Word Book. Washington: VOA, 1972.
MLA引文Special English workbook. Special English Workbook: A List of Words Used in the Voice of America's Radio Broadcasts in Special English: Special English Word Book. Washington: VOA, 1972.
警告:這些引文格式不一定是100%准確.