APA (7th ed.) Citation

Stapledon, O. (1964). Sirius, a fantasy of love and discord. Middlesex, Penguin.

Chicago Style (17th ed.) Citation

Stapledon, Olaf. Sirius, a Fantasy of Love and Discord. Harmondsworth: Middlesex, Penguin, 1964.

MLA (8th ed.) Citation

Stapledon, Olaf. Sirius, a Fantasy of Love and Discord. Middlesex, Penguin, 1964.

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