Beins, B. C. (2019). Research Methods (4th.). Cambridge University Press.
Citazione stile Chigago Style (17a edizione)Beins, Bernard C. Research Methods. 4th. Cambridge University Press, 2019.
Citatione MLA (9a ed.)Beins, Bernard C. Research Methods. 4th. Cambridge University Press, 2019.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.