APA (7th ed.) Citation

Pshenichnyi, B. N. (1971). Necessary conditions for an extremum. M. Dekker.

Chicago Style (17th ed.) Citation

Pshenichnyi, Boris N. Necessary Conditions for an Extremum. New York: M. Dekker, 1971.

MLA (9th ed.) Citation

Pshenichnyi, Boris N. Necessary Conditions for an Extremum. M. Dekker, 1971.