APA
Kac M., Ulam S. M., . (1971). Mathematics and logic. Harmondsworth: Penguin books.
Chicago
Kac Mark, Ulam Stanislaw M, . 1971. Mathematics and logic. Harmondsworth: Penguin books.
Harvard
Kac M., Ulam S. M., . (1971). Mathematics and logic. Harmondsworth: Penguin books.
MLA
Kac Mark, Ulam Stanislaw M, . Mathematics and logic. Harmondsworth: Penguin books. 1971.