Cita APA (7a ed.)

Harris, M., & Mower, D. (1994). World class: Teacher's book.

Cita Chicago Style (17a ed.)

Harris, Michael, y David Mower. World Class: Teacher's Book. Edinburgh, 1994.

Cita MLA (9a ed.)

Harris, Michael, y David Mower. World Class: Teacher's Book. 1994.