Gaya APA
Christie, A.
(-1950).
Dumb witness. - Pan-books, 82 Penerbitan asli 1937.
.
London:
Pan books.
Gaya MLA
Christie, A..
"Dumb witness. - Pan-books, 82 Penerbitan asli 1937. ".
London:
Pan books,
-1950.
Buku.