Cita APA (7th ed.)

Bertolo, S. (2001). Language acquisition and learnability. Cambridge University.

Cita Chicago (17th ed.)

Bertolo, Stefano. Language Acquisition and Learnability. Cambridge: Cambridge University, 2001.

Cita MLA (9th ed.)

Bertolo, Stefano. Language Acquisition and Learnability. Cambridge University, 2001.