Gaya APA

Crystal, D. (2007). How Language Works: How Babies Babble, Words Change Meaning And Languages Live Or Die (1st trade pbk. ed.). : Penguin.

Gaya MLA

Crystal, David. "How Language Works: How Babies Babble, Words Change Meaning And Languages Live Or Die". 1st trade pbk. ed. : Penguin, 2007. Book - Paperback.