Style de citation APA (7e éd.)

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

Style de citation Chicago (17e éd.)

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

Style de citation MLA (9e éd.)

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