APA (7th ed.) Citation

Niven, J. (2016). Holding up the universe. Penguin Books.

Chicago Style (17th ed.) Citation

Niven, Jennifer. Holding Up the Universe. UK: Penguin Books, 2016.

MLA (9th ed.) Citation

Niven, Jennifer. Holding Up the Universe. Penguin Books, 2016.

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