APA (7th ed.) Citation

Ireland. Ordnance Survey. Ordnance Survey maps of Ireland. 32 counties.

Chicago Style (17th ed.) Citation

Ireland. Ordnance Survey. Ordnance Survey Maps of Ireland. 32 Counties.

MLA (9th ed.) Citation

Ireland. Ordnance Survey. Ordnance Survey Maps of Ireland. 32 Counties.

Warning: These citations may not always be 100% accurate.