APA (7. basım) Alıntı

Dellar, H., & Walkley, A. (2016). Outcomes: Pre-Intermediate Student's Book. National Geographic Learning; Cengage Learning.

Chicago Style (17. basım) Atıf

Dellar, Hugh, ve Andrew Walkley. Outcomes: Pre-Intermediate Student's Book. United Kingdom: National Geographic Learning; Cengage Learning, 2016.

MLA (9th ed.) Atıf

Dellar, Hugh, ve Andrew Walkley. Outcomes: Pre-Intermediate Student's Book. National Geographic Learning; Cengage Learning, 2016.