Girling D. A., . (1978). Everyman's encyclopaedia vol 7. London: J M Dent and Sons.
Girling D A, . 1978. Everyman's encyclopaedia vol 7. London: J M Dent and Sons.
Girling D A, . Everyman's encyclopaedia vol 7. London: J M Dent and Sons. 1978.