APA (7th ed.) Citation

Carstairs, G. M. (1964). This island now. Penguin Books.

Chicago Style (17th ed.) Citation

Carstairs, George Morris. This Island Now. Harmondsworth [u.a.]: Penguin Books, 1964.

MLA (9th ed.) Citation

Carstairs, George Morris. This Island Now. Penguin Books, 1964.