APA
Singh D., Singh D., . (1958). Theory and analysis of sample survey designs. New York # New Delhi: John Wiley # New Age International.
Chicago
Singh Daroga, Singh Daroga, . 1958. Theory and analysis of sample survey designs. New York # New Delhi: John Wiley # New Age International.
Harvard
Singh D., Singh D., . (1958). Theory and analysis of sample survey designs. New York # New Delhi: John Wiley # New Age International.
MLA
Singh Daroga, Singh Daroga, . Theory and analysis of sample survey designs. New York # New Delhi: John Wiley # New Age International. 1958.