APA (7th ed.) Citation

Mackenzie, C., & Stone, C. (1923). The gramophone. [C. Mackenzie].

Chicago Style (17th ed.) Citation

Mackenzie, Compton, and Christopher Stone. The Gramophone. [London]: [C. Mackenzie], 1923.

MLA (9th ed.) Citation

Mackenzie, Compton, and Christopher Stone. The Gramophone. [C. Mackenzie], 1923.