APA (7th ed.) Citation

Wietek, G. (1975). Franz Radziwill (geb. 1895) Helgoland, 1959.

Chicago Style (17th ed.) Citation

Wietek, Gerhard. Franz Radziwill (geb. 1895) Helgoland, 1959. 1975.

MLA (9th ed.) Citation

Wietek, Gerhard. Franz Radziwill (geb. 1895) Helgoland, 1959. 1975.

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