Gaya APA

Davidson, G, F, ,, F. (2007). Language testing and assessment : an advanced resource book . NEW York AND LONDON: Routledge Applied LInguistic.

Gaya MLA

Davidson, Glenn, Fulcher, ,, Fred. "Language testing and assessment : an advanced resource book". NEW York AND LONDON: Routledge Applied LInguistic, 2007. E-Book.