To reference a print map use the Map (print) guidelines.
You will need:
Format:
Author’s name, Initials (Year) Title of map, scale (Series). Available from: http://digimap.edina.ac.uk [Accessed 24 February 2021].
Example:
Ordnance Survey (2019) Map of Telford, Ironbridge and The Wrekin, 1:125,000 (OS Explorer Map 241). Available from: http://digimap.edina.ac.uk [Accessed 24 February 2021].
In-text citation: (Ordnance Survey, 2019)
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