APA Style
Christie, Agatha. ([s.a.]).
A Murder is announced .
London:
Pan Books.
Chicago Style
Christie, Agatha.
A Murder is announced.
London:
Pan Books,
[s.a.].
Book.
MLA Style
Christie, Agatha.
A Murder is announced.
London:
Pan Books,
[s.a.].
Book.
Turabian Style
Christie, Agatha.
A Murder is announced.
London:
Pan Books,
[s.a.].
Book.