Gaya APA
Ovenden, M, W.
(1961).
LIFE IN THE UNIVERSE A SCIENTIFIC DISCUSSION
(
Cetakan 1)
.
New York:
Anchor Books.
Gaya MLA
Ovenden, Michael, W..
"LIFE IN THE UNIVERSE A SCIENTIFIC DISCUSSION".
Cetakan 1
New York:
Anchor Books,
1961.
Text.