Tried to find it for you, couldn’t find a thing specific to Maryland.
Looks like it is proportional type. Definitely not winner take all.
From :
https://ballotpedia.org/Presidential_election_in_Maryland,_2016
Maryland is expected to have 38 delegates at the 2016 Republican National Convention. Of this total, 24 will be district-level delegates (three for each of the state’s eight congressional districts). Maryland’s district delegates will be allocated on a winner-take-all basis; the candidate who wins a plurality of the vote in a given district will receive all of that district’s delegates.[4]
Of the remaining 14 delegates, 11 will serve at-large. Maryland’s at-large delegates will be allocated on a winner-take-all basis; the candidate who wins a plurality of the statewide vote will receive all of the state’s at-large delegates. In addition, three national party leaders (identified on the chart below as RNC delegates) will serve as bound delegates to the Republican National Convention. The RNC delegates will be required to pledge their support to the winner of the state’s primary.[
Maryland is winner take all.
See this link:
http://www.realclearpolitics.com/epolls/2016/president/republican_delegate_count.html