APA (7th ed.) Citation

Penck, A. (1990). Serie E, Nr. 17025: Erich Honecker.

Chicago Style (17th ed.) Citation

Penck, A.R. Serie E, Nr. 17025: Erich Honecker. 1990.

MLA (8th ed.) Citation

Penck, A.R. Serie E, Nr. 17025: Erich Honecker. 1990.

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