@book { AccentandListeningAssessment,
    title = "Accent and Listening Assessment",
    subtitle = "A Validation Study of the Use of Speakers with L2 Accents on an Academic English Listening Test",
    author = "Luke {Harding}",
    year = "2011",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1107787"
}