APA (7th ed.) Citation

Siegfried, A. (1931). England's crisis (1a. ed.). Jonathan Cape.

Chicago Style (17th ed.) Citation

Siegfried, André. England's Crisis. 1a. ed. Londres: Jonathan Cape, 1931.

MLA (9th ed.) Citation

Siegfried, André. England's Crisis. 1a. ed. Jonathan Cape, 1931.