APA (7th ed.) Citation

88. (1918). Troelstra, Pieter Jelles. . Wijnkoop, David Jozef.

Chicago Style (17th ed.) Citation

88. Troelstra, Pieter Jelles. . Wijnkoop, David Jozef. 1918.

MLA (8th ed.) Citation

88. Troelstra, Pieter Jelles. . Wijnkoop, David Jozef. 1918.

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