Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

Ewing, John H.ed, et al. Paul Halmos Celebrating 50 Years of Mathematics. Springer-Verlag, 1991.