APA (7th ed.) Citation

Schnell W J. (1971). Thirty years a watchtower slave (Abridged ed.). Baker House.

Chicago Style (17th ed.) Citation

Schnell W J. Thirty Years a Watchtower Slave. Abridged ed. Michigan: Baker House, 1971.

MLA (9th ed.) Citation

Schnell W J. Thirty Years a Watchtower Slave. Abridged ed. Baker House, 1971.