Pimsleur, P., & Berger, D. Encounters. A basic reader.
Cita Chicago (17th ed.)Pimsleur, Paul, i Donald Berger. Encounters. A Basic Reader.
Cita MLA (8th ed.)Pimsleur, Paul, i Donald Berger. Encounters. A Basic Reader.
Atenció: Aquestes cites poden no estar 100% correctes.