APA (7th ed.) Citation

Keene, C. (1980). The clue of the whistling bagpipes. Armada.

Chicago Style (17th ed.) Citation

Keene, Carolyn. The Clue of the Whistling Bagpipes. London: Armada, 1980.

MLA (9th ed.) Citation

Keene, Carolyn. The Clue of the Whistling Bagpipes. Armada, 1980.

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