In-Text:
(Lawrence 8: 23-25)
Works Cited:
Lawrence, D. H. The Letters of D. H. Lawrence. Edited by James T. Boulton, vol. 8, Cambridge UP, 2000.
NOTE: The format of citations for multivolume works depends on a number of variables, including whether all volumes were published in the same year, whether individual volumes have a single author or multiple authors, whether the set has an editor, and whether each volume has a unique title. If you are unsure of how to cite a multivolume source you've used, it is best to consult the MLA Handbook.