Berlin, Springer, 1955

Prague, New York, Pub. House of the Czechoslovak Academy of Sciences; Interscience, 1966
Rev. ed.,

Berlin : Heldermann, 1983

New York : W.H. Freeman, 1994

[Providence, R.I.] : American Mathematical Society, 1995

Princeton, N.J. : Princeton University Press, 1999

Oxford, New York, Pergamon Press; Macmillan 1964

New York : American Mathematical Society, 1949

Oxford : New York : Clarendon Press ; Oxford University Press, 1990

New York : Springer, 1998

New York : Springer-Verlag, 1976

New York : M. Dekker, 1993
2nd ed., rev. and expanded.

London, New York, Van Nostrand Reinhold 1969

Providence : American Mathematical Society, 1966