APA (7th ed.) Citation

(2016). Polar bears matter / by Tammy Gagne ; content consultant: Jeff Welker.

Chicago Style (17th ed.) Citation

Polar Bears Matter / by Tammy Gagne ; Content Consultant: Jeff Welker. 2016.

MLA (9th ed.) Citation

Polar Bears Matter / by Tammy Gagne ; Content Consultant: Jeff Welker. 2016.

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