APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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