21
Spivey, Robert A.
| Pearson Prentice Hall |
2007
22
Evans, Llewelyn J.
| Robert Clarke |
1891
24
Crosby, Robert G.
| The Rosemead School of Psychology |
2015
25
Candlish, Robert Smith
| Adam and Charles Black |
1872
26
Smith, Robert
| B & H Academic |
2008
28
29
Smith, J. F.
| British and Foreign Unitarian Association |
1913