APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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