Gaya APA

The New Book Of Knowledge Volume 20: W-X-Y-Z. (1975). New York: Grolier Incorporated.

Gaya Chicago

The New Book Of Knowledge Volume 20: W-X-Y-Z. . New York: Grolier Incorporated, 1975. .

Gaya MLA

The New Book Of Knowledge Volume 20: W-X-Y-Z. . New York: Grolier Incorporated, 1975. .

Gaya Turabian

The New Book Of Knowledge Volume 20: W-X-Y-Z. New York: Grolier Incorporated, 1975. .