APA Format
Hetzel, Basil S. . (). Basic health care in developing countries : an epidemiological perspective. :
MLA Format
Hetzel, Basil S. . Basic health care in developing countries : an epidemiological perspective. : ,
Australian/Harvard Format
Hetzel, Basil S. . . Basic health care in developing countries : an epidemiological perspective. , 
Warning: These citations may not always be 100% accurate.