@book { TheShapingofEnglishPoetry,
    title = "The Shaping of English Poetry",
    subtitle = "Essays on 'Sir Gawain and the Green Knight', Langland, Chaucer and Spenser",
    author = "Gerald {Morgan}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "Oxford, United Kingdom",
    doi = "10.3726/978-3-0353-0032-1",
    url = "https://www.peterlang.com/document/1043865"
}