APA (7th ed.) Citation

(2012). Chelmsford: Harlow & Bishop's Stortford (Ed. C3.). Ordnance Survey.

Chicago Style (17th ed.) Citation

Chelmsford: Harlow & Bishop's Stortford. Ed. C3. Southampton: Ordnance Survey, 2012.

MLA (9th ed.) Citation

Chelmsford: Harlow & Bishop's Stortford. Ed. C3. Ordnance Survey, 2012.

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