APA (7th ed.) Citation

Hawking, S. (2016). Black Holes: The BBC Reith Lectures. Penguin Random House.

Chicago Style (17th ed.) Citation

Hawking, Stephen. Black Holes: The BBC Reith Lectures. UK: Penguin Random House, 2016.

MLA (8th ed.) Citation

Hawking, Stephen. Black Holes: The BBC Reith Lectures. Penguin Random House, 2016.

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