APA

(1997). BIRDS. NEW DELHI: MADHUBAN EDUCATINAL BOOKS.

Chicago

1997. BIRDS. NEW DELHI: MADHUBAN EDUCATINAL BOOKS.

Harvard

(1997). BIRDS. NEW DELHI: MADHUBAN EDUCATINAL BOOKS.

MLA

BIRDS. NEW DELHI: MADHUBAN EDUCATINAL BOOKS. 1997.