APA (7th ed.) Citation

Halmos, P. R., Ewing, J. H., & Gehring, F. W. (1991). Paul Halmos celebrating 50 years of mathematics. Springer-Verlag.

Chicago Style (17th ed.) Citation

Halmos, Paul R., John H. Ewing, and Frederick W. Gehring. Paul Halmos Celebrating 50 Years of Mathematics. New York: Springer-Verlag, 1991.

MLA (9th ed.) Citation

Halmos, Paul R., et al. Paul Halmos Celebrating 50 Years of Mathematics. Springer-Verlag, 1991.