Citation, Documentation of Sources

Q. I want to refer as briefly as possible in the footnotes of my book to the two printings of the Japanese translation of a book, originally published in 1991 and reprinted with a new introduction in 2002. Can I refer as follows: C. L. R. James, Burakku jakoban (Tokyo: Omura-Shoten, 1991; 2002), or should I use a comma or a slash to distinguish the two printings?

A. Chicago style specifies the reprint date this way: (Tokyo: Omura-Shoten, 1991; repr. 2002).