APA

Garton-Sprenger J., Grenall S., . (1992). Flying Colours 3. Oxford: Heinemann.

Chicago

Garton-Sprenger J, Grenall S, . 1992. Flying Colours 3. Oxford: Heinemann.

Harvard

Garton-Sprenger J., Grenall S., . (1992). Flying Colours 3. Oxford: Heinemann.

MLA

Garton-Sprenger J, Grenall S, . Flying Colours 3. Oxford: Heinemann. 1992.