Gaya APA
Irwin,Christopher. (2001).
Guinness World Records 2001 .
United Kingdom:
GWR.
Gaya Chicago
Irwin,Christopher.
Guinness World Records 2001.
United Kingdom:
GWR,
2001.
Text.
Gaya MLA
Irwin,Christopher.
Guinness World Records 2001.
United Kingdom:
GWR,
2001.
Text.
Gaya Turabian
Irwin,Christopher.
Guinness World Records 2001.
United Kingdom:
GWR,
2001.
Print.