APA
Mark Davies, Dee Gardner, . (2010). A frequency dictionary of contemporary American English. London: Routledge.
Chicago
Mark Davies, Dee Gardner, . 2010. A frequency dictionary of contemporary American English. London: Routledge.
Harvard
Mark Davies, Dee Gardner, . (2010). A frequency dictionary of contemporary American English. London: Routledge.
MLA
Mark Davies, Dee Gardner, . A frequency dictionary of contemporary American English. London: Routledge. 2010.