SpringerLink (Online service), Sawyer, P., Paech, B., & Heymans, P. (2007). Requirements Engineering: Foundation for Software Quality: 13th International Working Conference, REFSQ 2007, Trondheim, Norway, June 11-12, 2007. Proceedings. Springer Berlin Heidelberg.
Παραπομπή σε μορφή Chicago (17η εκδ.)SpringerLink (Online service), Pete Sawyer, Barbara Paech, και Patrick Heymans. Requirements Engineering: Foundation for Software Quality: 13th International Working Conference, REFSQ 2007, Trondheim, Norway, June 11-12, 2007. Proceedings. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007.
Παραπομπή σε μορφή MLA (8th εκδ.)SpringerLink (Online service), et al. Requirements Engineering: Foundation for Software Quality: 13th International Working Conference, REFSQ 2007, Trondheim, Norway, June 11-12, 2007. Proceedings. Springer Berlin Heidelberg, 2007.
