Style de citation APA (7e éd.)

Bi�t�sadze, A. V. (1968). Boundary value problems for second order elliptic equations. North-Holland Pub. Co..

Style de citation Chicago (17e éd.)

Bi�t�sadze, A. V. Boundary Value Problems for Second Order Elliptic Equations. Amsterdam: North-Holland Pub. Co., 1968.

Style de citation MLA (8e éd.)

Bi�t�sadze, A. V. Boundary Value Problems for Second Order Elliptic Equations. North-Holland Pub. Co., 1968.