Matzner, T., & Stubenvoll, R. (2013). IT-Freelancer (1st edition.). dpunkt.
Cita Chicago Style (17a ed.)Matzner, Thomas, y Ruth Stubenvoll. IT-Freelancer. 1st edition. dpunkt, 2013.
Cita MLA (9a ed.)Matzner, Thomas, y Ruth Stubenvoll. IT-Freelancer. 1st edition. dpunkt, 2013.
Precaución: Estas citas no son 100% exactas.
