Gaya APA
Viktorahadi, R, B. (1980).
Collier's Encyclopedia with Bibliography and Index: Volume 18 .
New York:
Macmillan.
Gaya MLA
Viktorahadi, R.F., Bhanu.
"Collier's Encyclopedia with Bibliography and Index: Volume 18".
New York:
Macmillan,
1980.
Text.