APA (7th ed.) Citation

Rustagi, J. S. (1976). Variational methods in statistics. Academic Press.

Chicago Style (17th ed.) Citation

Rustagi, Jagdish S. Variational Methods in Statistics. New York: Academic Press, 1976.

MLA (9th ed.) Citation

Rustagi, Jagdish S. Variational Methods in Statistics. Academic Press, 1976.