APA Style
Christie, Agatha. (2001).
The Big Four (Reprint edition).
New York:
Penguin Book.
Chicago Style
Christie, Agatha.
The Big Four.
Reprint edition
New York:
Penguin Book,
2001.
Text.
MLA Style
Christie, Agatha.
The Big Four.
Reprint edition
New York:
Penguin Book,
2001.
Text.
Turabian Style
Christie, Agatha.
The Big Four.
Reprint edition
New York:
Penguin Book,
2001.
Print.