APA (7th ed.) Citation

Keil, G. (2020). Himmel hinter Gittern - meine Stasihaft in der DDR. BoD – Books on Demand.

Chicago Style (17th ed.) Citation

Keil, Gerd. Himmel Hinter Gittern - Meine Stasihaft in Der DDR. Norderstedt: BoD – Books on Demand, 2020.

MLA (9th ed.) Citation

Keil, Gerd. Himmel Hinter Gittern - Meine Stasihaft in Der DDR. BoD – Books on Demand, 2020.

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