Cita APA (7th ed.)

Sawyer, W. (1961). What is calculus about? Mathematical Association of America.

Cita Chicago (17th ed.)

Sawyer, W.W. What Is Calculus About? Washington: Mathematical Association of America, 1961.

Cita MLA (9th ed.)

Sawyer, W.W. What Is Calculus About? Mathematical Association of America, 1961.