Gaya APA
Gardner, E.
(1961).
The D.A.Calls it murder, repr. ed. Cet.pertama 1937.
.
Harmondsworth:
Penguin Books.
Gaya MLA
Gardner, E.S..
"The D.A.Calls it murder, repr. ed. Cet.pertama 1937. ".
Harmondsworth:
Penguin Books,
1961.
Buku.