Oxford UniversityPress. ISBN 0-19-513977-1. Huddleston, Rodney, and Geoffrey K. Pullum. (2002) The Cambridge Grammar of the English Language. Cambridge: Cambridge
Oxford UniversityPress. ISBN 0-19-513977-1. Huddleston, Rodney, and Geoffrey K. Pullum. (2002) The Cambridge Grammar of the English Language. Cambridge: Cambridge
Britannica, 11th ed., Vol. II', Cambridge: CambridgeUniversityPress Johan Ludvig Heiberg [1]. — Cambridge: CambridgeUniversityPress, 1908. — Т. 1. Angles на