Levinson, N. (1968). Gap and density theorems. American Mathematical Society.
Chicago Style (17th ed.) CitationLevinson, Norman. Gap and Density Theorems. New York: American Mathematical Society, 1968.
MLA (9th ed.) CitationLevinson, Norman. Gap and Density Theorems. American Mathematical Society, 1968.
Warning: These citations may not always be 100% accurate.