To cite cocor in publications use:

  Diedenhofen, B. & Musch, J. (2015). cocor: A Comprehensive Solution
  for the Statistical Comparison of Correlations. PLoS ONE, 10(4):
  e0121945. doi: 10.1371/journal.pone.0121945 Available:
  http://dx.doi.org/10.1371/journal.pone.0121945

A BibTeX entry for LaTeX users is

  @Article{,
    author = {Birk Diedenhofen and Jochen Musch},
    year = {2015},
    title = {cocor: A Comprehensive Solution for the Statistical Comparison of Correlations},
    journal = {PLoS ONE},
    volume = {10},
    number = {4},
    pages = {e0121945},
    doi = {10.1371/journal.pone.0121945},
    url = {http://dx.doi.org/10.1371/journal.pone.0121945},
    publisher = {Public Library of Science},
  }