Morton, J. E. (1968). On manpower forecasting. W.E. Upjohn Institute for Employment Research.
Chicago-viite (17. p.)Morton, J. E. On Manpower Forecasting. Kalamazoo, MI: W.E. Upjohn Institute for Employment Research, 1968.
MLA-viite (9. p.)Morton, J. E. On Manpower Forecasting. W.E. Upjohn Institute for Employment Research, 1968.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.