Clark, W. A. (1928). POSTURAL DEFECTS—CORRECTABLE IN SCHOOL PHYSICAL EDUCATION CLASSES.
استشهاد بنمط شيكاغوClark, William Arthur. POSTURAL DEFECTS—CORRECTABLE IN SCHOOL PHYSICAL EDUCATION CLASSES. 1928.
MLA استشهادClark, William Arthur. POSTURAL DEFECTS—CORRECTABLE IN SCHOOL PHYSICAL EDUCATION CLASSES. 1928.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.