APA   Click to copy
Bakker, R., Vries, C. de, Edwards, E., Hooghe, L., Jolly, S., Marks, G., … Vachudova, M. A. (2015). Measuring {Party} {Positions} in {Europe} the {Chapel} {Hill} {Expert} {Survey} {Trend} {File}, 1999–2010. Party Politics, 21, 143–152. https://doi.org/10.1177/1354068812462931

Chicago/Turabian   Click to copy
Bakker, Ryan, Catherine de Vries, Erica Edwards, Liesbet Hooghe, Seth Jolly, Gary Marks, Jonathan Polk, Jan Rovny, Marco Steenbergen, and Milada Anna Vachudova. “Measuring {Party} {Positions} in {Europe} the {Chapel} {Hill} {Expert} {Survey} {Trend} {File}, 1999–2010.” Party Politics 21 (January 2015): 143–152.

MLA   Click to copy
Bakker, Ryan, et al. “Measuring {Party} {Positions} in {Europe} the {Chapel} {Hill} {Expert} {Survey} {Trend} {File}, 1999–2010.” Party Politics, vol. 21, Jan. 2015, pp. 143–52, doi:10.1177/1354068812462931.

@article{bakker2015a,
  title = {Measuring {Party} {Positions} in {Europe} the {Chapel} {Hill} {Expert} {Survey} {Trend} {File}, 1999–2010},
  year = {2015},
  month = jan,
  journal = {Party Politics},
  pages = {143--152},
  volume = {21},
  doi = {10.1177/1354068812462931},
  author = {Bakker, Ryan and Vries, Catherine de and Edwards, Erica and Hooghe, Liesbet and Jolly, Seth and Marks, Gary and Polk, Jonathan and Rovny, Jan and Steenbergen, Marco and Vachudova, Milada Anna},
  month_numeric = {1}
}