„The Henley Passport Index“. Henley & Partners Holdings Ltd (2019-yil 26-mart). — „This graph shows the full Global Ranking of the 2019 Henley Passport Index. In certain cases, a rank is shared by multiple countries because these countries all have the same level of visa-free or visa-on-arrival access.“. 2019-yil 27-martda asl nusxadan arxivlangan. Qaraldi: 2019-yil 4-aprel.(PDF).
„The Henley Passport Index“. Henley & Partners Holdings Ltd (2019-yil 26-mart). — „This graph shows the full Global Ranking of the 2019 Henley Passport Index. In certain cases, a rank is shared by multiple countries because these countries all have the same level of visa-free or visa-on-arrival access.“. 2019-yil 27-martda asl nusxadan arxivlangan. Qaraldi: 2019-yil 4-aprel.(PDF).