APA

Vinod Kumar ;Asha Puri, . (2000). Perfect English. : .

Chicago

Vinod Kumar ;Asha Puri, . 2000. Perfect English. : .

Harvard

Vinod Kumar ;Asha Puri, . (2000). Perfect English. : .

MLA

Vinod Kumar ;Asha Puri, . Perfect English. : . 2000.