Those interested in this subject (and what Christian isn’t), may want to take a look at two of the leading articles in the recent edition of the New Horizons magazine:
Are You Ready to Give a Reason?, by Gary W. Davenport.
The Church’s Evangelistic Mission, by L. Anthony Curto.
The article by Dr. Curto is a (very) condensed version of his Reformed Evangelism and the Local Church class taught at Greenville Presbyterian Theological Seminary (which I had last semester).