APA

Garton- Sprenger J., Greenall S., . (1991). Flying Colours 2. Oxford: Heinemann.

Chicago

Garton- Sprenger J, Greenall S, . 1991. Flying Colours 2. Oxford: Heinemann.

Harvard

Garton- Sprenger J., Greenall S., . (1991). Flying Colours 2. Oxford: Heinemann.

MLA

Garton- Sprenger J, Greenall S, . Flying Colours 2. Oxford: Heinemann. 1991.