(1972). Modern century illustrated encyclopaedia, Vol.1: A to Astronomy. Modern Century Illustrated Encyclopaedia.
Chicago Edition CitationModern Century Illustrated Encyclopaedia, Vol.1: A to Astronomy. New York: Modern Century Illustrated Encyclopaedia, 1972.
MLA Edition CitationModern Century Illustrated Encyclopaedia, Vol.1: A to Astronomy. Modern Century Illustrated Encyclopaedia, 1972.
Warning: These citations may not always be 100% accurate.