APA   Click to copy
Stadler, M., Greiff, S., & Krolak-Schwerdt, S. (2016). Current methodological issues in educational large-scale assessments. Part 1. Special Issue. Psychological Test and Assessment Modeling.

Chicago/Turabian   Click to copy
Stadler, M., S. Greiff, and S. Krolak-Schwerdt. “Current Methodological Issues in Educational Large-Scale Assessments. Part 1. Special Issue.” Psychological Test and Assessment Modeling (2016).

MLA   Click to copy
Stadler, M., et al. “Current Methodological Issues in Educational Large-Scale Assessments. Part 1. Special Issue.” Psychological Test and Assessment Modeling, 2016.

@article{stadler2016a,
  title = {Current methodological issues in educational large-scale assessments. Part 1. Special Issue},
  year = {2016},
  journal = {Psychological Test and Assessment Modeling},
  author = {Stadler, M. and Greiff, S. and Krolak-Schwerdt, S.}
}