Ackert, P., & Partricia Ackert; Nicki Giroux de Navarro. (1994). Cause & effect: Intermediate reading practice. Boston, Mass: Heinle & Heinle Publishers.
استشهاد بنمط شيكاغوAckert, Partricia, و Partricia Ackert; Nicki Giroux de Navarro. Cause & Effect: Intermediate Reading Practice. Boston, Mass: Heinle & Heinle Publishers, 1994.
MLA استشهادAckert, Partricia, و Partricia Ackert; Nicki Giroux de Navarro. Cause & Effect: Intermediate Reading Practice. Boston, Mass: Heinle & Heinle Publishers, 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.