11
Steffen, Tom
| Evangelical Missions Information Service |
1993
12
Steffen, Tom
| Evangelical Missions Information Service |
1996
13
Steffen, Tom
| Evangelical Missions Information Service |
1998
14
Steffen, Tom
| International Student Leaders Coalition for Frontier Missions |
2015
15
Steffen, Tom
| American Society of Missiology |
2014
18
Steffen, Tom
| American Society of Missiology |
2010
19
Strauss, Robert
| Evangelical Missions Information Service |
2009
20
Steffen, Tom
| Evangelical Missions Information Service |
2005