APA-viite (7. p.)

Wetz, B., & Pye, D. (2011). English plus: Student's book 4 (1a. ed.). Oxford University Press.

Chicago-viite (17. p.)

Wetz, Ben, ja Diana Pye. English Plus: Student's Book 4. 1a. ed. Oxford: Oxford University Press, 2011.

MLA-viite (9. p.)

Wetz, Ben, ja Diana Pye. English Plus: Student's Book 4. 1a. ed. Oxford University Press, 2011.