@book { LearningtoChange,
    title = "Learning to Change?",
    subtitle = "The Role of Identity and Learning Careers in Adult Education",
    author = "Barbara {Merrill}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1106601"
}