Roehr, B. (2007). Doctors should speak out on climate change, expert says. BMJ Publishing Group Ltd.
استشهاد بنمط شيكاغوRoehr, Bob. Doctors Should Speak Out On Climate Change, Expert Says. BMJ Publishing Group Ltd, 2007.
MLA استشهادRoehr, Bob. Doctors Should Speak Out On Climate Change, Expert Says. BMJ Publishing Group Ltd, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.