Gaya APA
Niven, Larry. (1970).
Ringworld (Cet.1).
USA:
Ballantine Books.
Gaya Chicago
Niven, Larry.
Ringworld.
Cet.1
USA:
Ballantine Books,
1970.
Text.
Gaya MLA
Niven, Larry.
Ringworld.
Cet.1
USA:
Ballantine Books,
1970.
Text.
Gaya Turabian
Niven, Larry.
Ringworld.
Cet.1
USA:
Ballantine Books,
1970.
Print.