@book { GamifyYourClassroom,
    title = "Gamify Your Classroom",
    subtitle = "A Field Guide to Game-Based Learning",
    author = "Matthew {Farber}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1109572"
}