APA (7th ed.) Citation

Boettcher, F. (2017). Wölfe in Brandenburg: Von Friedrich Boettcher. Lübbener Heimatkalender.

Chicago Style (17th ed.) Citation

Boettcher, Friedrich. "Wölfe in Brandenburg: Von Friedrich Boettcher." Lübbener Heimatkalender 2017.

MLA (8th ed.) Citation

Boettcher, Friedrich. "Wölfe in Brandenburg: Von Friedrich Boettcher." Lübbener Heimatkalender, 2017.

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