APA

Rustagi J. S., Rustagi J. S., . (1976). Variational methods in statistics. New York [u.a.]: Academic Press.

Chicago

Rustagi Jagdish S, Rustagi Jagdish Sharan, . 1976. Variational methods in statistics. New York [u.a.]: Academic Press.

Harvard

Rustagi J. S., Rustagi J. S., . (1976). Variational methods in statistics. New York [u.a.]: Academic Press.

MLA

Rustagi Jagdish S, Rustagi Jagdish Sharan, . Variational methods in statistics. New York [u.a.]: Academic Press. 1976.