Ali, S., & Ripley, S. D. (1972). Handbook of the birds of India and Pakistan together with those of Bangladesh, Nepal, Sikkim, Bhutan and Sri Lanka. Oxford University.
Chicago Style aipamenaAli, Salim, and S. Dillon Ripley. Handbook of the Birds of India and Pakistan Together with Those of Bangladesh, Nepal, Sikkim, Bhutan and Sri Lanka. Bombay: Oxford University, 1972.
MLA aipamenaAli, Salim, and S. Dillon Ripley. Handbook of the Birds of India and Pakistan Together with Those of Bangladesh, Nepal, Sikkim, Bhutan and Sri Lanka. Oxford University, 1972.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.