British (American)
Mr (Mr.) – Mister (not usually written in full)
Ms (Ms.)
Mrs (Mrs.)

Notice the American version uses a dot in all these abbreviations.

Notice the dot for American and none for British.
Brit: Mr John Smith, Ms Clarke, Mrs Roe
Am: Mr. John Smith, Ms. Clarke, Mrs. Roe

Not for Miss - Miss Green, Miss Smith, Miss

British: Please send all your remarks to Mr Smith as soon as possible.
American: Please send all your remarks to Mr. Smith as soon as possible.

how to punctuate spelling

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