If the source indicates a specific version of a work released in more than one form, you must identify the version in your citation.
Goldberg, Natalie. Writing Down the Bones: Freeing the Writer Within. Forwarded by Julia Cameron, 30th Anniversary Edition, Shambala, 2016.
If the source you are documenting is part of a sequence of work, this must be documented in the citation.
Conan, Arthur Doyle Sir. Sherlock Holmes: The Complete Novels and Stories. Introduced by Loren D. Estleman, Vol. 2, Bantam Classics, 1986.