Cita APA (7a ed.)
Graham, P. (2004). Writing extra: A resource book of multi-level skills activities (1. vyd. dotlač.). Cambridge University Press.
Cita Chicago Style (17a ed.)
Graham, Palmer. Writing Extra: A Resource Book of Multi-level Skills Activities. 1. vyd. dotlač. Cambridge: Cambridge University Press, 2004.
Cita MLA (9a ed.)
Graham, Palmer. Writing Extra: A Resource Book of Multi-level Skills Activities. 1. vyd. dotlač. Cambridge University Press, 2004.
Precaución: Estas citas no son 100% exactas.