Gaya APA
Williams, Brian,. ().
Ensiklopedia Tanya dan jawab bumi kita .
Essex:
Miles Kelly Publishing.
Gaya Chicago
Williams, Brian,.
Ensiklopedia Tanya dan jawab bumi kita.
Essex:
Miles Kelly Publishing,
.
Text.
Gaya MLA
Williams, Brian,.
Ensiklopedia Tanya dan jawab bumi kita.
Essex:
Miles Kelly Publishing,
.
Text.
Gaya Turabian
Williams, Brian,.
Ensiklopedia Tanya dan jawab bumi kita.
Essex:
Miles Kelly Publishing,
.
Print.