APA   Click to copy
Song, H., Vonasch, A. J., Meier, B. P., & Bargh, J. A. (2012). Brighten up: Smiles facilitate perceptual judgment of facial lightness. Journal of Experimental Social Psychology, 48(1), 450–452.

Chicago/Turabian   Click to copy
Song, Hyunjin, Andrew J. Vonasch, Brian P. Meier, and John A. Bargh. “Brighten up: Smiles Facilitate Perceptual Judgment of Facial Lightness.” Journal of Experimental Social Psychology 48, no. 1 (December 1, 2012): 450–452.

MLA   Click to copy
Song, Hyunjin, et al. “Brighten up: Smiles Facilitate Perceptual Judgment of Facial Lightness.” Journal of Experimental Social Psychology, vol. 48, no. 1, Dec. 2012, pp. 450–52.

@article{hyunjin2012a,
  title = {Brighten up: Smiles facilitate perceptual judgment of facial lightness},
  year = {2012},
  month = dec,
  day = {1},
  issue = {1},
  journal = {Journal of Experimental Social Psychology},
  pages = {450-452},
  volume = {48},
  author = {Song, Hyunjin and Vonasch, Andrew J. and Meier, Brian P. and Bargh, John A.},
  month_numeric = {12}
}