13
Drucker, Peter F.
| Harper & Row |
1964
14
| Cambridge University Press:Harvard University Press |
1970
16
Coggins, Wade T.
| Evangelical Missions Information Service |
1980
17
Lloyd-Jones, D. M.
| Baker Book House |
1980
19
Ruppert, Phillip Paul
| The Rosemead School of Psychology |
1985
20
Snell, Bernard J.
| James Clarke |
1985