APA Style
Sackett, D, L. et al (1985).
Clinical Epidemiology: A Basic Scince for Cinical Medicine (1).
Boston:
Churchill Livingstone.
MLA Style
Sackett, David, L.. et al.
"Clinical Epidemiology: A Basic Scince for Cinical Medicine".
1
Boston:
Churchill Livingstone,
1985.
Text.