(2014). Job vacancies: 2011-2012 ... a closer look at hard-to-fill occupations. Labstat Updates.
Chicago-viite (17. p.)"Job Vacancies: 2011-2012 ... a Closer Look at Hard-to-fill Occupations." Labstat Updates 2014.
MLA-viite (9. p.)"Job Vacancies: 2011-2012 ... a Closer Look at Hard-to-fill Occupations." Labstat Updates, 2014.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.