2
Mac Lane, Saunders,
| Springer-Verlag |
1971
3
Strooker, Jan R.
| Cambridge University Press |
1978
4
Strooker, Jan R.
| Cambridge University Press |
1978
6
Oxtoby, John C.
| Springer-Verlag |
1980
7
Herrlich, Horst.
| Allyn and Bacon |
1973