APA (7th ed.) Citation

League of Nations. (1920). Treaty series: Publication of treaties and international engagements registered with the Secretariat of the league. s.n.

Chicago Style (17th ed.) Citation

League of Nations. Treaty Series: Publication of Treaties and International Engagements Registered with the Secretariat of the League. [Geneva, etc.]: s.n, 1920.

MLA (9th ed.) Citation

League of Nations. Treaty Series: Publication of Treaties and International Engagements Registered with the Secretariat of the League. s.n, 1920.