Gaya APA
Erfer, James. (1981).
Britannica Book Of The Year (Cet.1).
Chicago:
Encyclopedia Britannica, ins.
Gaya Chicago
Erfer, James.
Britannica Book Of The Year.
Cet.1
Chicago:
Encyclopedia Britannica, ins,
1981.
Text.
Gaya MLA
Erfer, James.
Britannica Book Of The Year.
Cet.1
Chicago:
Encyclopedia Britannica, ins,
1981.
Text.
Gaya Turabian
Erfer, James.
Britannica Book Of The Year.
Cet.1
Chicago:
Encyclopedia Britannica, ins,
1981.
Print.