how to put apostrophes after author's name

Hi all. I haven’t been struggling with this matter for a long time but can’t find any solution, so can anyone help me out,please?

My problem is  I want to put apostrophe s ('s) such as Green’s (2003), how can I put apostrophe s right after the author’s name? I just tried to put it but it didn’t work. and it’s not suffix or prefix so that didn’t work.

Is there any function to put the 's ??? or should I just write it with the EndNote reference system???

I hope to hear from any of you soon.

Thanks in advance!