I don't have all the bibliographic data here with me, but the WTS professor
Harvie M. Conn wrote some Reformed books on urban ministry. Here are the titles; I'll see later if I can dig these two out and fill in the data.
Planting and Growing Urban Churches: From Dream to Reality Urban Face of Mission: Ministering the Gospel in a Diverse & Changing World Urban Ministry: The Kingdom, the City & the People of God
Some of the volumes had other contributors -- the last two, I think.
Westminster's been big into urban ministry recently; maybe try plugging "urban" into a search at
Westminster Bookstore Online.