Silva, Jefferson O., Wiese, Igor, German, Daniel M., Treude, Christoph, Gerosa, Marco A., and Steinmacher, Igor. Google summer of code: Student motivations and contributions. Retrieved from https://par.nsf.gov/biblio/10158681. Journal of Systems and Software 162.C Web. doi:10.1016/j.jss.2019.110487.

Silva, Jefferson O., Wiese, Igor, German, Daniel M., Treude, Christoph, Gerosa, Marco A., & Steinmacher, Igor. Google summer of code: Student motivations and contributions. Journal of Systems and Software, 162 (C). Retrieved from https://par.nsf.gov/biblio/10158681. https://doi.org/10.1016/j.jss.2019.110487

Silva, Jefferson O., Wiese, Igor, German, Daniel M., Treude, Christoph, Gerosa, Marco A., and Steinmacher, Igor. "Google summer of code: Student motivations and contributions". Journal of Systems and Software 162 (C). Country unknown/Code not available. https://doi.org/10.1016/j.jss.2019.110487. https://par.nsf.gov/biblio/10158681.

@article{osti_10158681,
place = {Country unknown/Code not available}, title = {Google summer of code: Student motivations and contributions}, url = {https://par.nsf.gov/biblio/10158681}, DOI = {10.1016/j.jss.2019.110487}, abstractNote = {}, journal = {Journal of Systems and Software}, volume = {162}, number = {C}, author = {Silva, Jefferson O. and Wiese, Igor and German, Daniel M. and Treude, Christoph and Gerosa, Marco A. and Steinmacher, Igor}, }