Sonny Software

Is it possible to add a suffix (i.e. Jr, Sr, III) to an author's name? When I try to do it the software treats the suffix as an initial. The citation I am trying to produce should look like this:

Taylor FB Jr, Toh CH, Hoots WK, Wada H, Levi M; Scientific Subcommittee on
Disseminated Intravascular ...