Cita APA (7a ed.)

Garton-Sprenger, J., & Greenall, S. (1991). Flying colours 2. Heinemann.

Cita Chicago Style (17a ed.)

Garton-Sprenger, Judy, y Simon Greenall. Flying Colours 2. Oxford: Heinemann, 1991.

Cita MLA (9a ed.)

Garton-Sprenger, Judy, y Simon Greenall. Flying Colours 2. Heinemann, 1991.