APA (7th ed.) Citation

Roberts, M. (1939). Orion marches / by M. Roberts. Faber and Faber.

Chicago Style (17th ed.) Citation

Roberts, M. Orion Marches / by M. Roberts. Faber and Faber, 1939.

MLA (9th ed.) Citation

Roberts, M. Orion Marches / by M. Roberts. Faber and Faber, 1939.

Warning: These citations may not always be 100% accurate.