@masterthesis{20226,
    title = "Transformational leadership in Greek primary education",
    author = "Βερτόπουλος, Αριστείδης Μ.",
    year = "2018",
    school = "Τμήμα  Οικονομίας και Βιώσιμης Ανάπτυξης, Χαροκόπειο Πανεπιστήμιο"
}