Citazione Stile APA (7a Edizione)
Варданян, А. В. English Grammar for Technical University Students. Theory and Practice: учебное пособие.
Citazione stile Chigago Style (17a edizione)Варданян, А. В. English Grammar for Technical University Students. Theory and Practice: учебное пособие.
Citatione MLA (8a ed.)Варданян, А. В. English Grammar for Technical University Students. Theory and Practice: учебное пособие.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.