Peterson, J. M. (1978). Basic concepts of elementary mathematics (3d ed.). Prindle, Weber & Schmidt.
Cita Chicago (17th ed.)Peterson, John M. Basic Concepts of Elementary Mathematics. 3d ed. Boston: Prindle, Weber & Schmidt, 1978.
Cita MLA (9th ed.)Peterson, John M. Basic Concepts of Elementary Mathematics. 3d ed. Prindle, Weber & Schmidt, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.