APA Format
Elwood, J. Mark . (). Epidemiology of anencephalus and spina bifida. :
MLA Format
Elwood, J. Mark . Epidemiology of anencephalus and spina bifida. : ,
Australian/Harvard Format
Elwood, J. Mark . . Epidemiology of anencephalus and spina bifida. , 
Warning: These citations may not always be 100% accurate.