APA (7th ed.) Citation

Popkes, W. (2019). Archivmaterialien zu Wiard Popkes, 1936-2007.

Chicago Style (17th ed.) Citation

Popkes, Wiard. Archivmaterialien Zu Wiard Popkes, 1936-2007. 2019.

MLA (8th ed.) Citation

Popkes, Wiard. Archivmaterialien Zu Wiard Popkes, 1936-2007. 2019.

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