APA (7th ed.) Citation

Zweig, F. (1942). The planning of free societies. Secker & Warburg.

Chicago Style (17th ed.) Citation

Zweig, Ferdynand. The Planning of Free Societies. London: Secker & Warburg, 1942.

MLA (9th ed.) Citation

Zweig, Ferdynand. The Planning of Free Societies. Secker & Warburg, 1942.