Ackert, P., & Patricia Ackert with Nicki Giroux de Navarro and Jean Bernard. (2000). Cause & effect: Intermediate reading practice. Tp. Hồ Chí Minh: Trẻ.
Chicago-tyylinen lähdeviittausAckert, Patricia, ja Patricia Ackert with Nicki Giroux de Navarro and Jean Bernard. Cause & Effect: Intermediate Reading Practice. Tp. Hồ Chí Minh: Trẻ, 2000.
MLA-viiteAckert, Patricia, ja Patricia Ackert with Nicki Giroux de Navarro and Jean Bernard. Cause & Effect: Intermediate Reading Practice. Tp. Hồ Chí Minh: Trẻ, 2000.
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