Watkins, P. J. (1982). Diabetic complications: Retinopathy.
Citação norma ChicagoWatkins, P J. Diabetic Complications: Retinopathy. 1982.
MLA引文Watkins, P J. Diabetic Complications: Retinopathy. 1982.
警告：這些引文格式不一定是100％准確.
APA引文