HESers, I don't think I've ever seen these questions addressed anywhere, but I'm happy to be pointed to an obvious source I've missed. Given that both psychology and sociology have their own standard citation style systems, it's interesting that economics does not. This raises some questions: 1. Has there ever been a move by the AEA to create one? If so, what happened? 2. Has anyone compiled any survey data on which kinds of styles economics journals use? What about what PhD programs demand in dissertations? 3. Has anyone speculated as to why economics does not have one? I could hazard a few guesses, and my Hayekian instincts keep whispering something about the power of competition and the benefits of unplanned orders, but I wonder whether there's ever been any systematic look at this question. Thanks in advance. Steven Horwitz