APA   Click to copy
Maas, K., Steenbergen, M., & Saris, W. (1990). Vote {Probabilities}. Electoral Studies, 9, 91–107. https://doi.org/10.1016/0261-3794(90)90002-P

Chicago/Turabian   Click to copy
Maas, Kees, Marco Steenbergen, and Willem Saris. “Vote {Probabilities}.” Electoral Studies 9 (June 1990): 91–107.

MLA   Click to copy
Maas, Kees, et al. “Vote {Probabilities}.” Electoral Studies, vol. 9, June 1990, pp. 91–107, doi:10.1016/0261-3794(90)90002-P.

@article{maas1990a,
  title = {Vote {Probabilities}},
  year = {1990},
  month = jun,
  journal = {Electoral Studies},
  pages = {91--107},
  volume = {9},
  doi = {10.1016/0261-3794(90)90002-P},
  author = {Maas, Kees and Steenbergen, Marco and Saris, Willem},
  month_numeric = {6}
}