APA   Click to copy
Greiff, S., & Kyllonen, P. (2016). Editorial to the special issue Contemporary assessment challenges. The measurement of 21st century skills. Applied Measurement in Education, 29, 243–244. https://doi.org/10.1080/08957347.2016.1209209

Chicago/Turabian   Click to copy
Greiff, S., and P. Kyllonen. “Editorial to the Special Issue Contemporary Assessment Challenges. The Measurement of 21st Century Skills.” Applied Measurement in Education 29 (2016): 243–244.

MLA   Click to copy
Greiff, S., and P. Kyllonen. “Editorial to the Special Issue Contemporary Assessment Challenges. The Measurement of 21st Century Skills.” Applied Measurement in Education, vol. 29, 2016, pp. 243–44, doi:10.1080/08957347.2016.1209209.

@article{greiff2016a,
  title = {Editorial to the special issue Contemporary assessment challenges. The measurement of 21st century skills},
  year = {2016},
  journal = {Applied Measurement in Education},
  pages = {243-244},
  volume = {29},
  doi = {10.1080/08957347.2016.1209209},
  author = {Greiff, S. and Kyllonen, P.}
}