APA aipamena

Ackert, P. (2003). Cause and effect: Intermediate reading practice with answers. TR.

Chicago Style aipamena

Ackert, Patricia. Cause and Effect: Intermediate Reading Practice With Answers. TR, 2003.

MLA aipamena

Ackert, Patricia. Cause and Effect: Intermediate Reading Practice With Answers. TR, 2003.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.