APA (7th ed.) Citation

Quincey, T. d. (1995). The pleasures and pains of opium. Penguin Books.

Chicago Style (17th ed.) Citation

Quincey, Thomas de. The Pleasures and Pains of Opium. London: Penguin Books, 1995.

MLA (9th ed.) Citation

Quincey, Thomas de. The Pleasures and Pains of Opium. Penguin Books, 1995.