Sawyer, W. W. (1961). What is calculus about? Mathematical Association of America.
Lua i Stíl Chicago (17ú heag.)Sawyer, W. W. What Is Calculus About? Washington, D.C: Mathematical Association of America, 1961.
Lua MLA (9ú heag.)Sawyer, W. W. What Is Calculus About? Mathematical Association of America, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.