Cita APA (7a ed.)

Emmerson, P. (1999). Business builder: Intermediate teacher's resource : modules 7, 8 y 9. Macmillan Education.

Cita Chicago Style (17a ed.)

Emmerson, Paul. Business Builder: Intermediate Teacher's Resource : Modules 7, 8 Y 9. Oxford: Macmillan Education, 1999.

Cita MLA (9a ed.)

Emmerson, Paul. Business Builder: Intermediate Teacher's Resource : Modules 7, 8 Y 9. Macmillan Education, 1999.