I am trying to list my publications in my curriculum vitae. But, because I have publications in three fields x, y, z of study such that x is my major and y, z are not, I am looking for how to best display them so that it can be emphasized that I have works in different areas.
I agree with David Ketchesons answer. One alternative is to keep a standard method such as by year, and create tags at the end.
My Publication 1, Journal of Biology, 2013 [Biology]
My Publication 2, Journal of Mathematics, 2012 [Mathematics]
This will make it easy to see your publications and may give faster accessibility to your career. For example, if you started in field X, and then went to field Y, and now you are at field Z, the chronological order will show tags at earlier publications with field X, and more recent at field Z. In the same way, if you want to show how you publish in different fields throughout your career, it will show the mix of fields through the chronological order.