APA (7th ed.) Citation

Keene, C. (1972). The clue in the old stagecoach. William Collins Sons and Co. Ltd..

Chicago Style (17th ed.) Citation

Keene, Carolyn. The Clue in the Old Stagecoach. Great Britain: William Collins Sons and Co. Ltd., 1972.

MLA (9th ed.) Citation

Keene, Carolyn. The Clue in the Old Stagecoach. William Collins Sons and Co. Ltd., 1972.