Cita APA (7a ed.)

Penhale, B., & Parker, J. (2008). Working with vulnerable adults. Routledge [u.a.].

Cita Chicago Style (17a ed.)

Penhale, Bridget, y Jonathan Parker. Working with Vulnerable Adults. London [u.a.]: Routledge [u.a.], 2008.

Cita MLA (9a ed.)

Penhale, Bridget, y Jonathan Parker. Working with Vulnerable Adults. Routledge [u.a.], 2008.