Piehl, A. M. (1999). Testing for structural breaks in the evaluation of programs. National Bureau of Economic Research.
Citazione stile Chigago Style (17a edizione)Piehl, Anne Morrison. Testing for Structural Breaks in the Evaluation of Programs. Cambridge: National Bureau of Economic Research, 1999.
Citatione MLA (9a ed.)Piehl, Anne Morrison. Testing for Structural Breaks in the Evaluation of Programs. National Bureau of Economic Research, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.