Gaya APA
Company, C. (1980).
Comptan's encyclopedia and fact-index vol.25 U-Vult pages 1-388 .
Chicago:
F.E. Compton Company.
Gaya MLA
Company, Compton.
"Comptan's encyclopedia and fact-index vol.25 U-Vult pages 1-388".
Chicago:
F.E. Compton Company,
1980.
Text.