Cita APA (7a ed.)

Crick, B. (1980). George Orwell, a life. Penguin Books.

Cita Chicago Style (17a ed.)

Crick, Bernard. George Orwell, a Life. Harmondsworth [etc.]: Penguin Books, 1980.

Cita MLA (9a ed.)

Crick, Bernard. George Orwell, a Life. Penguin Books, 1980.