Editing Author Name for a reference

I am writing a text in Turkish and because of a language issue the following reference must be written this way

Gibson’a (1985) göre , which in English means According to Gibson (1985)

As you notice there is a suffex for the Author’s name that I need to add between Author and year.

How can I do that? the EDIT AND MANAGE CITATIONS window only allows for adding a prefix before author name or a suffix after the year…how can I add such thing inbetween?

Edit the citation to Exclude Author which will leave the year in parenthesis (1985). Type the word “göre” after the year. Then place your cursor in front of the year and manually type in “Gibson’s”.