Gaya APA
The Grolier encyclopedia of knowledge vol.4 :. (1993).
Danbury:
Grolier incorporated.
Gaya Chicago
The Grolier encyclopedia of knowledge vol.4 :.
.
Danbury:
Grolier incorporated,
1993.
Textbook.
Gaya MLA
The Grolier encyclopedia of knowledge vol.4 :.
.
Danbury:
Grolier incorporated,
1993.
Textbook.
Gaya Turabian
The Grolier encyclopedia of knowledge vol.4 :.
Danbury:
Grolier incorporated,
1993.
Textbook.