APA
(1956). World of mathematics # World of mathematics-4. New York: Simon & Schuster.
Chicago
1956. World of mathematics # World of mathematics-4. New York: Simon & Schuster.
Harvard
(1956). World of mathematics # World of mathematics-4. New York: Simon & Schuster.
MLA
World of mathematics # World of mathematics-4. New York: Simon & Schuster. 1956.