Gaya APA
Hoyle, Fred. (1955).
Frontiers of astronomy .
New York:
Harper and Row.
Gaya Chicago
Hoyle, Fred.
Frontiers of astronomy.
New York:
Harper and Row,
1955.
Text.
Gaya MLA
Hoyle, Fred.
Frontiers of astronomy.
New York:
Harper and Row,
1955.
Text.
Gaya Turabian
Hoyle, Fred.
Frontiers of astronomy.
New York:
Harper and Row,
1955.
Print.