APA Style
Blake, Nicholas. (1940).
A Question of proof .
London:
The Crime club.
Chicago Style
Blake, Nicholas.
A Question of proof.
London:
The Crime club,
1940.
Book.
MLA Style
Blake, Nicholas.
A Question of proof.
London:
The Crime club,
1940.
Book.
Turabian Style
Blake, Nicholas.
A Question of proof.
London:
The Crime club,
1940.
Book.