@book { SystemicPersonOrientedStudyofChildDevelopmentinEarlyPrimarySchool,
    title = "Systemic Person-Oriented Study of Child Development in Early Primary School",
    author = "Aaro {Toomela}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1136088"
}