Ackert, P., & Partricia Ackert; Đặng Tuấn Anh. (1997). Cause & effect: Intermediate reading practice. Tp. Hồ Chí Minh: Trẻ.
Chicago Style citaatAckert, Partricia, en Partricia Ackert; Đặng Tuấn Anh. Cause & Effect: Intermediate Reading Practice. Tp. Hồ Chí Minh: Trẻ, 1997.
MLA citatieAckert, Partricia, en Partricia Ackert; Đặng Tuấn Anh. Cause & Effect: Intermediate Reading Practice. Tp. Hồ Chí Minh: Trẻ, 1997.
Let op: Deze citaties zijn niet altijd 100% accuraat.