There's More to the Title than Meets the Eye: Exploring the Possibilities
http://baywood.metapress.com/link.asp?target=contribution&id=BJ1683857Q731162
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Hartley, James
Journal of Technical Writing and Communication
2007

Abstract:

There is little research on the use of titles in academic articles, and even less on different types of titles. In this article Crosby's taxonomy of titles [1] is brought up-to date and extended. Twelve types of titles are distinguished. The author argues that it would be helpful to discuss these different types with student writers.