Cita APA (7a ed.)

Butler, G., & MacManus, F. (1998). Psychology: A very short introduction. University Press.

Cita Chicago Style (17a ed.)

Butler, Gillian, y Freda MacManus. Psychology: A Very Short Introduction. Oxford [etc.]: University Press, 1998.

Cita MLA (9a ed.)

Butler, Gillian, y Freda MacManus. Psychology: A Very Short Introduction. University Press, 1998.