APA (7th ed.) Citation

Ewen, D. (1966). Encyclopaedia of the opera (New enlarged ed.). Calder & Boyars.

Chicago Style (17th ed.) Citation

Ewen, David. Encyclopaedia of the Opera. New enlarged ed. London: Calder & Boyars, 1966.

MLA (9th ed.) Citation

Ewen, David. Encyclopaedia of the Opera. New enlarged ed. Calder & Boyars, 1966.