APA
Chopra K. S., . (1987). Business environment. Pune: The Times Research Foundation.
Chicago
Chopra K S, . 1987. Business environment. Pune: The Times Research Foundation.
Harvard
Chopra K. S., . (1987). Business environment. Pune: The Times Research Foundation.
MLA
Chopra K S, . Business environment. Pune: The Times Research Foundation. 1987.