Gaya APA
Koestler, A.
(1967).
The act of creation. Foreword by Cyril Burt.
.
New York:
New York A Laurel Edition.
Gaya MLA
Koestler, Arthur.
"The act of creation. Foreword by Cyril Burt. ".
New York:
New York A Laurel Edition,
1967.
Buku.