Gaya APA
The World Book Encyclopedia - I. (1973).
:
Field Enterprises Educational Corporation.
Gaya Chicago
The World Book Encyclopedia - I.
.
:
Field Enterprises Educational Corporation,
1973.
Text.
Gaya MLA
The World Book Encyclopedia - I.
.
:
Field Enterprises Educational Corporation,
1973.
Text.
Gaya Turabian
The World Book Encyclopedia - I.
:
Field Enterprises Educational Corporation,
1973.
Print.