Bell, W. B. (1921). A British Medical Association Lecture ON SOME COMMON, BUT OFTEN UNRECOGNIZED, OBSTETRICAL DIFFICULTIES.
استشهاد بنمط شيكاغوBell, W. Blair. A British Medical Association Lecture ON SOME COMMON, BUT OFTEN UNRECOGNIZED, OBSTETRICAL DIFFICULTIES. 1921.
MLA استشهادBell, W. Blair. A British Medical Association Lecture ON SOME COMMON, BUT OFTEN UNRECOGNIZED, OBSTETRICAL DIFFICULTIES. 1921.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.