sql server - SQL return max value only -

i have done basic queries using max 1 has little more it. using ssms 2012. need include group or distinct.

select statement -

select a.year1, a.periodid  gpstj..sy40100 a.closed = 0 , a.periodid <> 0 , a.series = 5 

this returns following results -

year1    periodid 2015     12 2015     12 2016     1 2016     1 2016     2 2016     2 

i want return 1 row, maximum value in year column first, , maximum period id -

year1    periodid 2016     2 

thanks

just ordering top (1)

select top (1) a.year1, a.periodid  gpstj..sy40100 a.closed = 0 , a.periodid <> 0 , a.series = 5 order a.year1 desc, a.periodid desc