APA

Fergusson R., Manser M. & Pickeing D. (2004). The penguin thes aurus. : Penguin reference.

Chicago

Fergusson Rosalind, Manser Martin and Pickeing David. 2004. The penguin thes aurus. : Penguin reference.

Harvard

Fergusson R., Manser M. and Pickeing D. (2004). The penguin thes aurus. : Penguin reference.

MLA

Fergusson Rosalind, Manser Martin and Pickeing David. The penguin thes aurus. : Penguin reference. 2004.