APA-viite (7. p.)

Lightbown, P. M., & Spada, N. (1993). How languages are learned. Oxford University.

Chicago-viite (17. p.)

Lightbown, Patsy M., ja Nina Spada. How Languages Are Learned. Oxford: Oxford University, 1993.

MLA-viite (9. p.)

Lightbown, Patsy M., ja Nina Spada. How Languages Are Learned. Oxford University, 1993.