APA (7th ed.) Citation

Royer, E., & Vandervelde, E. (1915). German socialists and Belgium. London: Allen & Unwin.

Chicago Style (17th ed.) Citation

Royer, Emile, and Emile Vandervelde. German Socialists and Belgium. London: Allen & Unwin, 1915.

MLA (8th ed.) Citation

Royer, Emile, and Emile Vandervelde. German Socialists and Belgium. London: Allen & Unwin, 1915.

Warning: These citations may not always be 100% accurate.