Citing reprinted material

Journal articles are sometimes later reprinted as chapters of edited books. The question whether citations of this material should mention the book or the journal has significant implications. I describe several advantages of citing the journal: it allows the readers to locate the material more easily and to handle it more conveniently (when it is available electronically); it gives a better signal about how important and updated the material is; and it gives the journal proper credit, which is important because journals are ranked based on citations. Finally, several reasons for citing the book are also discussed.