APA

Penny R. J., . (2002). A history of the Spanish language. New York: Cambridge University Press.

Chicago

Penny Ralph J, . 2002. A history of the Spanish language. New York: Cambridge University Press.

Harvard

Penny R. J., . (2002). A history of the Spanish language. New York: Cambridge University Press.

MLA

Penny Ralph J, . A history of the Spanish language. New York: Cambridge University Press. 2002.