Cita APA (7a ed.)

Beins, B. C. (2019). Research Methods (4th.). Cambridge University Press.

Cita Chicago Style (17a ed.)

Beins, Bernard C. Research Methods. 4th. Cambridge: Cambridge University Press, 2019.

Cita MLA (9a ed.)

Beins, Bernard C. Research Methods. 4th. Cambridge University Press, 2019.