APA Edition Citation

Lusternik, L. A., & Sobolev, V. J. (1985). Elements of functional analysis (23.).

Chicago Edition Citation

Lusternik, L A., and V J. Sobolev. Elements of Functional Analysis. 23. Hindustan Publishing Corporation, New Delhi, 1985.

MLA Edition Citation

Lusternik, L A., and V J. Sobolev. Elements of Functional Analysis. 23. 1985.