I usually write "e.g." when I give an example. But, I just wonder if I have to add comma after e.g. because Some published papers indicate "(e.g.~~~)", and others said "(e.g.,~~~)".
In addition, are parentheses necessary or optional?
I usually write "e.g." when I give an example. But, I just wonder if I have to add comma after e.g. because Some published papers indicate "(e.g.~~~)", and others said "(e.g.,~~~)".
In addition, are parentheses necessary or optional?