Cita APA (7th ed.)

Cunninghan, S., & Moor, P. (1999). Cutting edge upper intermediate: Student's book. Pearson Education.

Cita Chicago (17th ed.)

Cunninghan, Sarah, i Peter Moor. Cutting Edge Upper Intermediate: Student's Book. Essex: Pearson Education, 1999.

Cita MLA (9th ed.)

Cunninghan, Sarah, i Peter Moor. Cutting Edge Upper Intermediate: Student's Book. Pearson Education, 1999.