Gaya APA
The Grolier encyclopedia of knowledge vol.9 :. (1993).
Danbury:
Grolier incorporated.
Gaya Chicago
The Grolier encyclopedia of knowledge vol.9 :.
.
Danbury:
Grolier incorporated,
1993.
Textbook.
Gaya MLA
The Grolier encyclopedia of knowledge vol.9 :.
.
Danbury:
Grolier incorporated,
1993.
Textbook.
Gaya Turabian
The Grolier encyclopedia of knowledge vol.9 :.
Danbury:
Grolier incorporated,
1993.
Textbook.