Philipson, T.J. (2000) External Treatment Effects and Program Implementation Bias [cd], NBER technical working paper series. Cambridge, Mass.: National Bureau of Economic Research. doi:10.3386/t0250.
Chicago Manual of Style 17th edition (full note)Philipson, Tomas J. External Treatment Effects and Program Implementation Bias. Cd. NBER technical working paper series. Cambridge, Mass.: National Bureau of Economic Research, [2000?], Cambridge, Mass.: National Bureau of Economic Research, [2000?]. https://doi.org/10.3386/t0250.
American Psychological Association 7th editionPhilipson, T. J. (ca. 2000). External Treatment Effects and Program Implementation Bias [Cd]. In NBER technical working paper series. National Bureau of Economic Research. https://doi.org/10.3386/t0250
Modern Language Association 9th editionPhilipson, T. J. „External Treatment Effects and Program Implementation Bias“. NBER technical working paper series, cd, National Bureau of Economic Research, 2000, https://doi.org/10.3386/t0250.
ISO-690 (author-date, Deutsch)PHILIPSON, Tomas J., 2000. External Treatment Effects and Program Implementation Bias. Cambridge, Mass.: National Bureau of Economic Research