APA (7th ed.) Citation

GETHIN & GUNNEMARK. (1996). The art and science of learning languages. Intellect Books.

Chicago Style (17th ed.) Citation

GETHIN and GUNNEMARK. The Art and Science of Learning Languages. London: Intellect Books, 1996.

MLA (8th ed.) Citation

GETHIN and GUNNEMARK. The Art and Science of Learning Languages. Intellect Books, 1996.

Warning: These citations may not always be 100% accurate.