Cite
A Revision of the Campbellian Validity System.
MLA
Lund, Thorleif. “A Revision of the Campbellian Validity System.” Scandinavian Journal of Educational Research, vol. 65, no. 3, Apr. 2021, pp. 523–35. EBSCOhost, https://doi.org/10.1080/00313831.2020.1739126.
APA
Lund, T. (2021). A Revision of the Campbellian Validity System. Scandinavian Journal of Educational Research, 65(3), 523–535. https://doi.org/10.1080/00313831.2020.1739126
Chicago
Lund, Thorleif. 2021. “A Revision of the Campbellian Validity System.” Scandinavian Journal of Educational Research 65 (3): 523–35. doi:10.1080/00313831.2020.1739126.