handout http://www.grammarbook.com/punctuation/periods.asp http://www.grammarbook.com/punctuation/periods.asp http://www.grammarbook.com/punctuation/periods.asp http://www.grammarbook.com/punctuation/periods.asp http://www.grammarbook.com/punctuation/periods.asp handout Period Rules: http://www.grammarbook.com/punctuation/periods.asp