APA

Garton-Sprenger J., Greenall S., . (1990). Flying Colours 1. Oxford: Heinemann.

Chicago

Garton-Sprenger J, Greenall S, . 1990. Flying Colours 1. Oxford: Heinemann.

Harvard

Garton-Sprenger J., Greenall S., . (1990). Flying Colours 1. Oxford: Heinemann.

MLA

Garton-Sprenger J, Greenall S, . Flying Colours 1. Oxford: Heinemann. 1990.