Ebert, C. (2012). Systematisches Requirements Engineering, 4th Edition (4th edition.). dpunkt.
Cita Chicago Style (17a ed.)Ebert, Christof. Systematisches Requirements Engineering, 4th Edition. 4th edition. dpunkt, 2012.
Cita MLA (9a ed.)Ebert, Christof. Systematisches Requirements Engineering, 4th Edition. 4th edition. dpunkt, 2012.
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