Citazione Stile APA (7a Edizione)

Keene, C. (1972). The clue in the old stagecoach. Collins.

Citazione stile Chigago Style (17a edizione)

Keene, Carolyn. The Clue in the Old Stagecoach. London & Glasgow: Collins, 1972.

Citatione MLA (9a ed.)

Keene, Carolyn. The Clue in the Old Stagecoach. Collins, 1972.