The “heap of broken images” (22) referenced in the following lines could be taken for a symbol of the fragmentary structure of the poem itself. However, give the full citation again if you start a new paragraph or cite another source in between. MLA Works Cited entry for a poem In ...
In case if you were needing to cite a poem, that has fewer than three lines of text, it would be necessary to indicate breaks in text with a slash at the end of each line. Here is a poem example. “Yesterday upon the stair / I saw a man who was not there”(1-2) ...