APA aipamena

YAM, P. (2007). PRIMARY LEVEL COMPLETE GRAMMAR.

Chicago Style aipamena

YAM, PETER. PRIMARY LEVEL COMPLETE GRAMMAR. 2007.

MLA aipamena

YAM, PETER. PRIMARY LEVEL COMPLETE GRAMMAR. 2007.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.