Cita APA

Gellert, W., & Gellert, W. (1967). The VNR concise encyclopedia of mathematics. New York, New York: Van Nostrand Reinhold.

Citación estilo Chicago

Gellert, W., y W. Gellert. The VNR Concise Encyclopedia of Mathematics. New York, New York: Van Nostrand Reinhold, 1967.

Cita MLA

Gellert, W., y W. Gellert. The VNR Concise Encyclopedia of Mathematics. New York, New York: Van Nostrand Reinhold, 1967.