APA aipamena

Lougheed, L. Direct to toefl iBT: Student´s book.

Chicago Style aipamena

Lougheed, Lin. Direct to Toefl IBT: Student´s Book.

MLA aipamena

Lougheed, Lin. Direct to Toefl IBT: Student´s Book.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.