APA
Janson T., . (2003). Speak. Oxford ; New York: Oxford University Press.
Chicago
Janson Tore, . 2003. Speak. Oxford ; New York: Oxford University Press.
Harvard
Janson T., . (2003). Speak. Oxford ; New York: Oxford University Press.
MLA
Janson Tore, . Speak. Oxford ; New York: Oxford University Press. 2003.