Gaya APA
Crofts, F.
(1938).
The cask, [15th impr.]. - Crime club, 25. Penerbitan asli 1920.
.
London:
Collins.
Gaya MLA
Crofts, F.W..
"The cask, [15th impr.]. - Crime club, 25. Penerbitan asli 1920. ".
London:
Collins,
1938.
Buku.