@book { TheSocioEconomicContributionofTourismtoNigeriaandNorthCyprus,
    title = "The Socio-Economic Contribution of Tourism to Nigeria and North Cyprus",
    author = "Henry Chike {Okonkwo}",
    year = "2014",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    url = "https://www.hausarbeiten.de/document/276394"
}