@book { GroundstoPlay,
    title = "Grounds to Play",
    subtitle = "Culture-specific Ideals in the Upbringing of Children in France, Germany and the Netherlands",
    author = "Malene {Gram}",
    year = "2004",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1096757"
}