Hendriks, A. A. J. (1997). The construction of the Five-Factor Personality Inventory (FFPI). s.n.].
Lua i Stíl Chicago (17ú heag.)Hendriks, Anja Alide Jolijn. The Construction of the Five-Factor Personality Inventory (FFPI). [S.l.: s.n.], 1997.
Lua MLA (8ú heag.)Hendriks, Anja Alide Jolijn. The Construction of the Five-Factor Personality Inventory (FFPI). s.n.], 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.