APA (7th ed.) Citation

Adam Matthew Digital (Firm) & Smith, J. T. (1920). Oil news. [publisher not identified].

Chicago Style (17th ed.) Citation

Adam Matthew Digital (Firm) and J. T. Smith. Oil News. London: [publisher not identified], 1920.

MLA (9th ed.) Citation

Adam Matthew Digital (Firm) and J. T. Smith. Oil News. [publisher not identified], 1920.