Union Flag: approved designs(англ.). Геральдычная палата. — «For the avoidance of doubt and the sake of convenience, Garter King of Arms[en], under the authority of the Earl Marshal, has approved two versions of the Union flag as being accurate representations suitable for use. These are of the proportions 5:3, commonly flown on land; and 2:1, commonly flown at sea.» Праверана 5 кастрычніка 2021.
UK Flag Protocol | Free online guide | With illustrations(англ.). The Flag Institute. — «The normal proportions for the national flags of the United Kingdom are 3:5 on land, but ensigns are customarily made in proportion 1:2.» Праверана 5 кастрычніка 2021.
Union Flag: approved designs(англ.). Геральдычная палата. — «For the avoidance of doubt and the sake of convenience, Garter King of Arms[en], under the authority of the Earl Marshal, has approved two versions of the Union flag as being accurate representations suitable for use. These are of the proportions 5:3, commonly flown on land; and 2:1, commonly flown at sea.» Праверана 5 кастрычніка 2021.
