2
Narici, Lawrence.
| M. Dekker |
1971
3
Mac Lane, Saunders,
| Springer-Verlag |
1971
4
Herrlich, Horst.
| Allyn and Bacon |
1973
5
Strooker, Jan R.
| Cambridge University Press |
1978
6
Northcott, D. G.
| University Press |
1973
7
Strooker, Jan R.
| Cambridge University Press |
1978