I’m considering switching our house style for possessive singular words that end in s, x, and z from just an apostrophe (Kansas’, Fritz’) to apostrophe-s (Kansas’s, Fritz’s), in order to match Chicago’s standard rule. Right now we follow a Chicago alternative (which matches A.P. style). Though the Chicago standard is more complicated to apply, it’s more in line with pronunciation. Also, I think the apostrophe-s sometimes conveys information (i.e., this noun is singular) that is lost when the s disappears. If we make a switch, it has to be between issues, of course. Please discuss.