APA Style
Christie, Agatha. (1985).
The Thirteen Problems (Reissue edition).
USA:
Penguin Group (USA) Incorporated.
Chicago Style
Christie, Agatha.
The Thirteen Problems.
Reissue edition
USA:
Penguin Group (USA) Incorporated,
1985.
Text.
MLA Style
Christie, Agatha.
The Thirteen Problems.
Reissue edition
USA:
Penguin Group (USA) Incorporated,
1985.
Text.
Turabian Style
Christie, Agatha.
The Thirteen Problems.
Reissue edition
USA:
Penguin Group (USA) Incorporated,
1985.
Print.