APA (7th ed.) Citation

Webb, B., & Webb, S. (1902). De theorie der vakvereenigingen. Rotterdam: Wakker.

Chicago Style (17th ed.) Citation

Webb, Beatrice, and Sidney Webb. De Theorie Der Vakvereenigingen. Rotterdam: Wakker, 1902.

MLA (8th ed.) Citation

Webb, Beatrice, and Sidney Webb. De Theorie Der Vakvereenigingen. Rotterdam: Wakker, 1902.

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