11
Schmidt, Paul Wilhelm
| Helbing & Lichtenhahn |
1986
13
Schmidt, Richard.
| Vandenhoeck und Ruprecht |
1870
14
Schmidt, Leigh Eric
| American Society of Church History |
2000
15
Schmidt, Paul F.
| Journal of Pastoral Care Publications |
1980
16
Schmidt, Paul Wilhelm
| Carl Habel |
1880