APA (7th ed.) Citation

Costa, P. T., & McCrae, R. R. (1992). Revised NEO Personality Inventory (NEO PI-RTM) and NEO Five-Factor Inventory (NEO-FFI): Professional manual. Psychological Assessment Resources.

Chicago Style (17th ed.) Citation

Costa, Paul T., and Robert R. McCrae. Revised NEO Personality Inventory (NEO PI-RTM) and NEO Five-Factor Inventory (NEO-FFI): Professional Manual. Odessa, FL: Psychological Assessment Resources, 1992.

MLA (9th ed.) Citation

Costa, Paul T., and Robert R. McCrae. Revised NEO Personality Inventory (NEO PI-RTM) and NEO Five-Factor Inventory (NEO-FFI): Professional Manual. Psychological Assessment Resources, 1992.