APA (7th ed.) Citation

Gellert, W., Hellwich, M., Kastner, H., & Kustner, H. (1977). The VNR concise encyclopedia of mathematics. Van Nostrand Reinhold.

Chicago Style (17th ed.) Citation

Gellert, W., M. Hellwich, H. Kastner, and H. Kustner. The VNR Concise Encyclopedia of Mathematics. New York: Van Nostrand Reinhold, 1977.

MLA (8th ed.) Citation

Gellert, W., et al. The VNR Concise Encyclopedia of Mathematics. Van Nostrand Reinhold, 1977.