Cita APA (7th ed.)

(2016). Polar bears matter / by Tammy Gagne ; content consultant, Dr. Jeff Welker, Fulbright distinguished US Arctic chair-Norway, professor of ecology, University of Alaska Anchorage.

Cita Chicago (17th ed.)

Polar Bears Matter / by Tammy Gagne ; Content Consultant, Dr. Jeff Welker, Fulbright Distinguished US Arctic Chair-Norway, Professor of Ecology, University of Alaska Anchorage. 2016.

Cita MLA (9th ed.)

Polar Bears Matter / by Tammy Gagne ; Content Consultant, Dr. Jeff Welker, Fulbright Distinguished US Arctic Chair-Norway, Professor of Ecology, University of Alaska Anchorage. 2016.