Παραπομπή σε μορφή APA (7η εκδ.)

HA, P. (2008). Commentary. Evidence of things unseen: Causality and confounding in path models of youth substance use. Addiction, 103(2), 320. https://doi.org/10.1111/j.1360-0443.2007.02108.x

Παραπομπή σε μορφή Chicago (17η εκδ.)

HA, Pollack. "Commentary. Evidence of Things Unseen: Causality and Confounding in Path Models of Youth Substance Use." Addiction 103, no. 2 (2008): 320. https://doi.org/10.1111/j.1360-0443.2007.02108.x.

Παραπομπή σε μορφή MLA (9th εκδ.)

HA, Pollack. "Commentary. Evidence of Things Unseen: Causality and Confounding in Path Models of Youth Substance Use." Addiction, vol. 103, no. 2, 2008, p. 320, https://doi.org/10.1111/j.1360-0443.2007.02108.x.