0

This question already has an answer here:

If an abbreviation occurs at the end of sentence, is there one period or two? For example,

Caesar was assassinated in 44 B.C.. Brutus killed him.

Should there be one period or two?

This has nothing to do with etc.

marked as duplicate by FumbleFingers, Chenmunka, anongoodnurse, Mari-Lou A, Hellion Jun 7 '15 at 13:33

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • 2
    Periods are heavy-duty punctuation; one period can do two jobs at once. – John Lawler Jun 4 '15 at 15:03
  • @John: and even three: My teacher said, "Caesar was assassinated in 44 B.C." – Peter Shor Jun 4 '15 at 15:14
2

Only one. Chicago manual of style covers this (with various examples). Other style guides will usually agree (they don't on everything). In your case BC is quite often used without punctuation anyway.

Not the answer you're looking for? Browse other questions tagged or ask your own question.