APA

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

Chicago

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

Harvard

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

MLA

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