5
American Psychological Association.
| American Psychological Association |
2010
180.21-A512p6
180.21-A512p6
7
Sorabji, Richard.
| Cornell Univesity Press |
2005
180-S713p
180-S713p
8
Salles, Ricardo
| Clarendon:Oxford University Press |
2005
180-S168m
180-S168m
10
Sedley, D. N
| Cambridge University Press |
2003
180-S449c
180-S449c