APA (7th ed.) Citation

Popkes, W. Archivmaterialien zu Wiard Popkes, 1936-2007.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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