Gaya APA
Peter, Jovanovich dkk, Christopher, Morris. (1981).
World English 2 .
USA:
Harcourt Brace.
Gaya Chicago
Peter, Jovanovich dkk, Christopher, Morris.
World English 2.
USA:
Harcourt Brace,
1981.
Text.
Gaya MLA
Peter, Jovanovich dkk, Christopher, Morris.
World English 2.
USA:
Harcourt Brace,
1981.
Text.
Gaya Turabian
Peter, Jovanovich dkk, Christopher, Morris.
World English 2.
USA:
Harcourt Brace,
1981.
Print.