APA (7th ed.) Citation

Dietz, K. (1998). Frisii (die Friesen).

Chicago Style (17th ed.) Citation

Dietz, Karlheinz. Frisii (die Friesen). 1998.

MLA (9th ed.) Citation

Dietz, Karlheinz. Frisii (die Friesen). 1998.

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