APA (7th ed.) Citation

Heiss-Heerdegen, E. (1964). Königsberg.

Chicago Style (17th ed.) Citation

Heiss-Heerdegen, Else. Königsberg. 1964.

MLA (9th ed.) Citation

Heiss-Heerdegen, Else. Königsberg. 1964.

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