Gaya APA
Doerr, J., Opdahl, A, L. (2013).
Requirements Engineering: Foundation for Software Quality .
Springer Berlin Heidelberg:
Springer.
Gaya MLA
Doerr, Joerg., Opdahl, Andreas, L..
"Requirements Engineering: Foundation for Software Quality".
Springer Berlin Heidelberg:
Springer,
2013.
E-Book.