Gaya APA
Thrusfield, M., Christley, R. (2018).
Veterinary Epidemiology (Fourth Edition).
India:
John Wiley & Sons Ltd.
Gaya MLA
Thrusfield, Michael., Christley, Robert.
"Veterinary Epidemiology".
Fourth Edition
India:
John Wiley & Sons Ltd,
2018.
e-book.