APA (7th ed.) Citation

Grylls ,Bear, & Emma McCann. (2020). The mountain challenge. Bear Grylls.

Chicago Style (17th ed.) Citation

Grylls ,Bear, and Emma McCann. The Mountain Challenge. London: Bear Grylls, 2020.

MLA (9th ed.) Citation

Grylls ,Bear, and Emma McCann. The Mountain Challenge. Bear Grylls, 2020.

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