Duckworth, Angela L.; Peterson, Christopher; Matthews, Michael D.; Kelly, Dennis R. (2007). "Grit: Perseverance and passion for long-term goals". Journal of Personality and Social Psychology. 92 (6): 1087–1101. doi:10.1037/0022-3514.92.6.1087. ISSN1939-1315. PMID17547490. S2CID11159170.
Credé, M.; Tynan, M.C.; Harms, P.D. (September 2017). "Much ado about grit: A meta-analytic synthesis of the grit literature". Journal of Personality and Social Psychology. 113 (3): 492–511. doi:10.1037/pspp0000102. PMID27845531. S2CID24361685.
Duckworth, A.L.; Quinn, P.D.; Tsukayama, E. (July 2021). "Revisiting the Factor Structure of Grit: A Commentary on Duckworth and Quinn (2009)". Journal of Personality Assessment. 103 (5): 573–575. doi:10.1080/00223891.2021.1942022. PMID34254861. S2CID235808561.
Duckworth, Angela L.; Peterson, Christopher; Matthews, Michael D.; Kelly, Dennis R. (2007). "Grit: Perseverance and passion for long-term goals". Journal of Personality and Social Psychology. 92 (6): 1087–1101. doi:10.1037/0022-3514.92.6.1087. ISSN1939-1315. PMID17547490. S2CID11159170.
Credé, M.; Tynan, M.C.; Harms, P.D. (September 2017). "Much ado about grit: A meta-analytic synthesis of the grit literature". Journal of Personality and Social Psychology. 113 (3): 492–511. doi:10.1037/pspp0000102. PMID27845531. S2CID24361685.
Duckworth, A.L.; Quinn, P.D.; Tsukayama, E. (July 2021). "Revisiting the Factor Structure of Grit: A Commentary on Duckworth and Quinn (2009)". Journal of Personality Assessment. 103 (5): 573–575. doi:10.1080/00223891.2021.1942022. PMID34254861. S2CID235808561.
Shulevitz, Judith (May 4, 2016). "'Grit,' by Angela Duckworth". The New York Times. Archived from the original on January 25, 2019. Retrieved August 16, 2016.
Duckworth, Angela L.; Peterson, Christopher; Matthews, Michael D.; Kelly, Dennis R. (2007). "Grit: Perseverance and passion for long-term goals". Journal of Personality and Social Psychology. 92 (6): 1087–1101. doi:10.1037/0022-3514.92.6.1087. ISSN1939-1315. PMID17547490. S2CID11159170.
Credé, M.; Tynan, M.C.; Harms, P.D. (September 2017). "Much ado about grit: A meta-analytic synthesis of the grit literature". Journal of Personality and Social Psychology. 113 (3): 492–511. doi:10.1037/pspp0000102. PMID27845531. S2CID24361685.
Duckworth, A.L.; Quinn, P.D.; Tsukayama, E. (July 2021). "Revisiting the Factor Structure of Grit: A Commentary on Duckworth and Quinn (2009)". Journal of Personality Assessment. 103 (5): 573–575. doi:10.1080/00223891.2021.1942022. PMID34254861. S2CID235808561.
Hartnett, Kevin (2012). "Character's content"(PDF). The Pennsylvania Gazette. May–June: 58–63. Archived(PDF) from the original on 2021-09-17. Retrieved 2019-11-21.
Hartnett, Kevin (2012). "Character's content"(PDF). The Pennsylvania Gazette. May–June: 58–63. Archived(PDF) from the original on 2021-09-17. Retrieved 2019-11-21.
Shulevitz, Judith (May 4, 2016). "'Grit,' by Angela Duckworth". The New York Times. Archived from the original on January 25, 2019. Retrieved August 16, 2016.
Duckworth, Angela L.; Peterson, Christopher; Matthews, Michael D.; Kelly, Dennis R. (2007). "Grit: Perseverance and passion for long-term goals". Journal of Personality and Social Psychology. 92 (6): 1087–1101. doi:10.1037/0022-3514.92.6.1087. ISSN1939-1315. PMID17547490. S2CID11159170.