APA (7th ed.) Citation

Levy, S. (1993). Artificial life: The quest for a new creation. Penguin Books.

Chicago Style (17th ed.) Citation

Levy, Steven. Artificial Life: The Quest for a New Creation. London [etc.]: Penguin Books, 1993.

MLA (9th ed.) Citation

Levy, Steven. Artificial Life: The Quest for a New Creation. Penguin Books, 1993.