(2019). FUNDERMENTALS of psychological research. Tetfund.
Lua i Stíl Chicago (17ú heag.)FUNDERMENTALS of Psychological Research. Tetfund, 2019.
Lua MLA (9ú heag.)FUNDERMENTALS of Psychological Research. Tetfund, 2019.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.