Cita APA (7a ed.)

Garton Sprenger, J., & Greenall, S. (1990). Flying Colours 1: Students book (1a. ed.). Heinemann.

Cita Chicago Style (17a ed.)

Garton Sprenger, Judy, y Simon Greenall. Flying Colours 1: Students Book. 1a. ed. Oxford: Heinemann, 1990.

Cita MLA (9a ed.)

Garton Sprenger, Judy, y Simon Greenall. Flying Colours 1: Students Book. 1a. ed. Heinemann, 1990.