APA   Click to copy
Bas, M. A., & Orsun, O. F. Identifying Regime Types and Transitions.

Chicago/Turabian   Click to copy
Bas, Muhammet A., and Omer F. Orsun. “ Identifying Regime Types and Transitions,” n.d.

MLA   Click to copy
Bas, Muhammet A., and Omer F. Orsun. Identifying Regime Types and Transitions.

@unpublished{bas-a,
  title = { Identifying Regime Types and Transitions},
  author = {Bas, Muhammet A. and Orsun, Omer F.}
}