APA-viite (7. p.)

Dellar, H., & Walkley, A. (2010). Pre-intermediate outcomes: Class audio CDs. Heinle Cengage Learning.

Chicago-viite (17. p.)

Dellar, Hugh, ja Andrew Walkley. Pre-intermediate Outcomes: Class Audio CDs. Hampshire: Heinle Cengage Learning, 2010.

MLA-viite (9. p.)

Dellar, Hugh, ja Andrew Walkley. Pre-intermediate Outcomes: Class Audio CDs. Heinle Cengage Learning, 2010.