APA (7th ed.) Citation

(1918). V.l.n.r: Keizer, Ymkers, de Jong, Dolleman.

Chicago Style (17th ed.) Citation

V.l.n.r: Keizer, Ymkers, De Jong, Dolleman. 1918.

MLA (8th ed.) Citation

V.l.n.r: Keizer, Ymkers, De Jong, Dolleman. 1918.

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