An Introduction to Homological Algebra - Joseph J. Rotman - Google Books

https://books.google.de/books?id=P2HV4f8gyCgC&pg=PA71#v=onepage&q&f=false

Homological Algebra has grown in the nearly three decades since the rst e- tion of this book appeared in 1979. Two books discussing more recent results are Weibel, An Introduction to Homological Algebra, 1994, and Gelfand– Manin, Methods of Homological…