APA

Breuer J., Fehr H. F., . (1966). Introduction to the theory of sets. New Jersey: Prentice-Hall.

Chicago

Breuer Josef, Fehr Howard F, . 1966. Introduction to the theory of sets. New Jersey: Prentice-Hall.

Harvard

Breuer J., Fehr H. F., . (1966). Introduction to the theory of sets. New Jersey: Prentice-Hall.

MLA

Breuer Josef, Fehr Howard F, . Introduction to the theory of sets. New Jersey: Prentice-Hall. 1966.