Παραπομπή σε μορφή APA (7η εκδ.)

Dellar, H., & Walkley, A. (2010). Pre-Intermediate Outcomes: Student's Book. Heinle, Cengage Learning EMEA.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Dellar, Hugh, και Andrew Walkley. Pre-Intermediate Outcomes: Student's Book. Hampshire, United Kingdom: Heinle, Cengage Learning EMEA, 2010.

Παραπομπή σε μορφή MLA (9th εκδ.)

Dellar, Hugh, και Andrew Walkley. Pre-Intermediate Outcomes: Student's Book. Heinle, Cengage Learning EMEA, 2010.