Style de citation APA (7e éd.)
Graham, P. (2004). Writing extra: A resource book of multi-level skills activities (1. vyd. dotlač.). Cambridge University Press.
Style de citation Chicago (17e éd.)
Graham, Palmer. Writing Extra: A Resource Book of Multi-level Skills Activities. 1. vyd. dotlač. Cambridge: Cambridge University Press, 2004.
Style de citation MLA (9e éd.)
Graham, Palmer. Writing Extra: A Resource Book of Multi-level Skills Activities. 1. vyd. dotlač. Cambridge University Press, 2004.
Attention : ces citations peuvent ne pas être correctes à 100%.