@book{
title = {A2 Key for schools trainer 1 },
author = {},
editor = {Downloadable Audio: www.cambridge.org/keyforschoolstrainer1 },
editor = {Sulla cop.: for the revised exam from 2020 },
year = {2019},
edition = {2nd ed},
address = {Cambridge [etc.] },
publisher = {Cambridge University press},
}