Poldrack, R. A. (2021). Hard to break: Why our brains make habits stick. Princeton University Press.
Lua i Stíl Chicago (17ú heag.)Poldrack, Russell A. Hard to Break: Why Our Brains Make Habits Stick. Princeton, New Jersey: Princeton University Press, 2021.
Lua MLA (8ú heag.)Poldrack, Russell A. Hard to Break: Why Our Brains Make Habits Stick. Princeton University Press, 2021.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.