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-tyylinen lähdeviittausAli, Salim, ja 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-viiteAli, Salim, ja 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.
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