APA Style
Zeleny, Robert O.. (1990).
The WOrld Book Encyclopedia - Vol 7 .
:
.
Chicago Style
Zeleny, Robert O..
The WOrld Book Encyclopedia - Vol 7.
:
,
1990.
Teks.
MLA Style
Zeleny, Robert O..
The WOrld Book Encyclopedia - Vol 7.
:
,
1990.
Teks.
Turabian Style
Zeleny, Robert O..
The WOrld Book Encyclopedia - Vol 7.
:
,
1990.
Teks.