APA
Salim Ali; Ripley S. D., . (1970). Handbook of the birds of India and Pakistan: Together with those of Nepal, Sikkim, Bhutan and Ceylon, Vol.4: Frogmouths to pittas. Oxford University Press, New Delhi: .
Chicago
Salim Ali; Ripley S Dillon, . 1970. Handbook of the birds of India and Pakistan: Together with those of Nepal, Sikkim, Bhutan and Ceylon, Vol.4: Frogmouths to pittas. Oxford University Press, New Delhi: .
Harvard
Salim Ali; Ripley S. D., . (1970). Handbook of the birds of India and Pakistan: Together with those of Nepal, Sikkim, Bhutan and Ceylon, Vol.4: Frogmouths to pittas. Oxford University Press, New Delhi: .
MLA
Salim Ali; Ripley S Dillon, . Handbook of the birds of India and Pakistan: Together with those of Nepal, Sikkim, Bhutan and Ceylon, Vol.4: Frogmouths to pittas. Oxford University Press, New Delhi: . 1970.