Dyfyniad APA

Ackert, P. (1994). Cause & effect: Intermediate reading practice. Boston, MA: Heinle and Heinle.

Dyfyniad Arddull Chicago

Ackert, Patricia. Cause & Effect: Intermediate Reading Practice. Boston, MA: Heinle and Heinle, 1994.

Dyfyniad MLA

Ackert, Patricia. Cause & Effect: Intermediate Reading Practice. Boston, MA: Heinle and Heinle, 1994.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.