Gaya APA
Guinness book of world records 1989. (1989).
tempaterbit:
penerbit.
Gaya Chicago
Guinness book of world records 1989.
Edisi.
tempaterbit:
penerbit,
1989.
Text.
Gaya MLA
Guinness book of world records 1989.
Edisi.
tempaterbit:
penerbit,
1989.
Text.
Gaya Turabian
Guinness book of world records 1989.
tempaterbit:
penerbit,
1989.
Print.