Gaya APA

Lena, L. (2006). Paving the Way for the Control Cholera and Typhoid Fever in Kolkata,India . India: National Institute of Cholera and Enteric Diseases.

Gaya MLA

Lena, Lopez,Anna. "Paving the Way for the Control Cholera and Typhoid Fever in Kolkata,India". India: National Institute of Cholera and Enteric Diseases, 2006. print.