@article{HeissEngbertGroepeletal.2010,
  author    = {Christian Heiss and Kai Engbert and Peter Groepel and Matthias Ziegler and Ralf Brand},
  title     = {Self-leadership and volition : distinct and potentially supplemental constructs?},
  doi       = {10.2466/01.03.07.14.Pr0.107.5.447-462},
  url       = {http://www.ammonsscientific.com/search/},
  year      = {2010},
}