Paul T. Costa and Robert R. MacCrae. Revised NEO Personality Inventory (NEO PI-R) and NEO Five-Factor Inventory (NEO-FFI): Professional Manual. Psychological Assessment Resources, Incorporated, 1992.
@book{costa_revised_1992,
author = {Costa, Paul T. and MacCrae, Robert R.},
publisher = {{Psychological Assessment Resources, Incorporated}},
shorttitle = {Revised {{NEO}} Personality Inventory ({{NEO PI}}-{{R}}) and {{NEO}} Five-Factor Inventory ({{NEO}}-{{FFI}})},
title = {Revised {{NEO}} Personality Inventory ({{NEO PI}}-{{R}}) and {{NEO}} Five-Factor Inventory ({{NEO}}-{{FFI}}): {{Professional}} Manual},
year = {1992}
}