APA-viite (7. p.)

Ehrman, M. E. (1996). Understanding second language learning difficulties. Sage.

Chicago-viite (17. p.)

Ehrman, Madeline Elizabeth. Understanding Second Language Learning Difficulties. Thousand Oaks, Calif: Sage, 1996.

MLA-viite (9. p.)

Ehrman, Madeline Elizabeth. Understanding Second Language Learning Difficulties. Sage, 1996.