APA (7th ed.) Citation

Höckmann, O. (1993). Rivierverbindingen in Germania Libera.

Chicago Style (17th ed.) Citation

Höckmann, Olaf. Rivierverbindingen in Germania Libera. 1993.

MLA (9th ed.) Citation

Höckmann, Olaf. Rivierverbindingen in Germania Libera. 1993.

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