APA (7th ed.) Citation

Chartmasters (Firm). (1979). El Segundo, California. Chartmasters.

Chicago Style (17th ed.) Citation

Chartmasters (Firm). El Segundo, California. El Cajon, CA: Chartmasters, 1979.

MLA (9th ed.) Citation

Chartmasters (Firm). El Segundo, California. Chartmasters, 1979.