APA Style
Jekel, J, F. et al (2001).
Epidemiology, Biostatistics, and Preventive Medicine (2nd edn.).
Philadelphia:
Saunders Elsevier.
MLA Style
Jekel, James, F.. et al.
"Epidemiology, Biostatistics, and Preventive Medicine".
2nd edn.
Philadelphia:
Saunders Elsevier,
2001.
Text.