Kleiner, M. M. (2006). Licensing occupations: Ensuring quality or restricting competition? W.E. Upjohn Institute for Employment Research.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Kleiner, Morris M. Licensing Occupations: Ensuring Quality or Restricting Competition? Kalamazoo, Mich.: W.E. Upjohn Institute for Employment Research, 2006.
MLA -ийн эшлэл (9 дэх хэвлэлт)Kleiner, Morris M. Licensing Occupations: Ensuring Quality or Restricting Competition? W.E. Upjohn Institute for Employment Research, 2006.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.