Tuffs, A. (2007). One in 20 East German doctors spied on patients or colleagues. BMJ Publishing Group Ltd.
استشهاد بنمط شيكاغوTuffs, Annette. One in 20 East German Doctors Spied On Patients or Colleagues. BMJ Publishing Group Ltd, 2007.
MLA استشهادTuffs, Annette. One in 20 East German Doctors Spied On Patients or Colleagues. BMJ Publishing Group Ltd, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.