Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.