Gaya APA
Dingwall, E, J, A, , J, L.
(-1956).
The unknown is it nearer?
.
(New York):
New American Library.
Gaya MLA
Dingwall, Eric, J., And, , John, Langdon-Davies..
"The unknown is it nearer? ".
(New York):
New American Library,
-1956.
Buku.