Cita APA (7a ed.)

Duffy, M. M., & Alexander, A. (1999). Overcoming language barriers for non-english speaking patients. [s.n.].

Cita Chicago Style (17a ed.)

Duffy, Margaret M., y Amy Alexander. Overcoming Language Barriers for Non-english Speaking Patients. [S.l.]: [s.n.], 1999.

Cita MLA (9a ed.)

Duffy, Margaret M., y Amy Alexander. Overcoming Language Barriers for Non-english Speaking Patients. [s.n.], 1999.