Cita APA (7a ed.)

Dellar, H., & Walkley, A. (2010). Intermediate outcomes: Student´s book. Heinle, Cengage Learning EMEA.

Cita Chicago Style (17a ed.)

Dellar, Hugh, y Andrew Walkley. Intermediate Outcomes: Student´s Book. Hampshire: Heinle, Cengage Learning EMEA, 2010.

Cita MLA (9a ed.)

Dellar, Hugh, y Andrew Walkley. Intermediate Outcomes: Student´s Book. Heinle, Cengage Learning EMEA, 2010.