Cita APA (7th ed.)

Spier, F. (2015). Big history and the future of humanity (Second edition.). John Wiley & Sons, Ltd.

Cita Chicago (17th ed.)

Spier, Fred. Big History and the Future of Humanity. Second edition. Chichester, West Sussex, UK: John Wiley & Sons, Ltd, 2015.

Cita MLA (9th ed.)

Spier, Fred. Big History and the Future of Humanity. Second edition. John Wiley & Sons, Ltd, 2015.