APA

Wallace I., Hume R. & Morris R.Bird Life. د. م: د . ن.

Chicago

Wallace Ian, Hume Rob and Morris Rick.Bird Life. د. م: د . ن.

Harvard

Wallace I., Hume R. and Morris R.Bird Life. د. م: د . ن.

MLA

Wallace Ian, Hume Rob and Morris Rick.د. م: د . ن. .