For one to three lines of poetry, use slashes to indicate breaks in the poetry lines and enclose the entire quote in quotation marks. Put line numbers in parentheses outside of the quotation marks. Your period goes after the parenthesis.
When citing four or more lines of poetry, block quotations are used. Starting on a separate line, indent the poem selection 10 spaces from the left margin. No quotation marks are needed. Place the line numbers in parentheses following the last line of the poem outside of the punctuation.
When quoting multiple individual words from throughout a poem, just place the word in quotation marks and follow it with the line number in parentheses. When quoting a single word, place it quotation marks and put the line number in parentheses at the end of your sentence inside the punctuation.
Use ellipses when starting a quotation in the middle of a line or to represent missing text. Use an entire row of ellipses when leaving out an entire line or more of text.