"Although one may think that all westerns are the same, Genreflecting lists 40 distinct themes and the names of authors who specialize in each one. Some readers will devour any western about range wars but will not touch a title about mountain men." - Evans, "Developing Library and Information Center Collections", Chap. 4

Betty Rosenberg and Diane Tixier Herald, Genreflecting: A Guide to Reading Interests in Genre Fiction, 4th ed. (Englewood, Colo.: Libraries Unlimited, 1995).