Gaya APA
The New Book of Knowledge (XWYZ Volume 20). (1983).
USA:
Grolier Incorporated.
Gaya Chicago
The New Book of Knowledge (XWYZ Volume 20).
XWYZ Volume 20, 1983.
USA:
Grolier Incorporated,
1983.
Text.
Gaya MLA
The New Book of Knowledge (XWYZ Volume 20).
XWYZ Volume 20, 1983.
USA:
Grolier Incorporated,
1983.
Text.
Gaya Turabian
The New Book of Knowledge (XWYZ Volume 20).
USA:
Grolier Incorporated,
1983.
Print.