APA   Click to copy
Kingstone, P., & Young, J. (2009). Partisanship and policy choice. Political Research Quarterly, 62, 29–41.

Chicago/Turabian   Click to copy
Kingstone, Peter, and Joseph Young. “Partisanship and Policy Choice.” Political Research Quarterly 62 (2009): 29–41.

MLA   Click to copy
Kingstone, Peter, and Joseph Young. “Partisanship and Policy Choice.” Political Research Quarterly, vol. 62, Sage Publications, 2009, pp. 29–41.

@article{kingstone2009a,
  title = {Partisanship and policy choice},
  year = {2009},
  journal = {Political Research Quarterly},
  pages = {29-41},
  publisher = {Sage Publications},
  volume = {62},
  author = {Kingstone, Peter and Young, Joseph}
}