Tietze, H. (1965). Famous problems of mathematics: Solved and unsolved mathematical problems from antiquity to modern times (Authorized transl. from the second (1959) rev. German ed.). Graylock Pr.
Chicago Style (17th ed.) CitationTietze, Heinrich. Famous Problems of Mathematics: Solved and Unsolved Mathematical Problems from Antiquity to Modern Times. Authorized transl. from the second (1959) rev. German ed. New York: Graylock Pr, 1965.
MLA (9th ed.) CitationTietze, Heinrich. Famous Problems of Mathematics: Solved and Unsolved Mathematical Problems from Antiquity to Modern Times. Authorized transl. from the second (1959) rev. German ed. Graylock Pr, 1965.
Warning: These citations may not always be 100% accurate.