Girling, D. A. (1978). Everyman's encyclopaedia (6th ed.). Dent.
Cita Chicago (17th ed.)Girling, D. A. Everyman's Encyclopaedia. 6th ed. London: Dent, 1978.
Cita MLA (8th ed.)Girling, D. A. Everyman's Encyclopaedia. 6th ed. Dent, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.