MIXER: why the difference?

@article{nazir2014,
  title = {MIXER: why the difference?},
  author = {Asad Nazir and Ruth S. Aylett and Mei Yii Lim and Birgit Endrass and Lynne E. Hall and Christopher Ritter},
  journal = {AAMAS},
  year = {2014},
  month = {Jan},
}

Asad Nazir et al. (2014). MIXER: why the difference?. AAMAS.

Asad Nazir, et al.. "MIXER: why the difference?." AAMAS, 2014.

Asad Nazir, et al.. "MIXER: why the difference?." AAMAS (2014).

Asad Nazir et al., 2014. MIXER: why the difference?. AAMAS.

TY  - JOUR
TI  - MIXER: why the difference?
AU  - Asad Nazir
AU  - Ruth S. Aylett
AU  - Mei Yii Lim
AU  - Birgit Endrass
AU  - Lynne E. Hall
AU  - Christopher Ritter
PY  - 2014
JO  - AAMAS
ER  -