Cita APA (7a ed.)

Freund, J. E. (1956). A Modern introduction to mathematics. Prentice-Hall Inc.

Cita Chicago Style (17a ed.)

Freund, John E. A Modern Introduction to Mathematics. Englewood Cliffs, N.J: Prentice-Hall Inc, 1956.

Cita MLA (9a ed.)

Freund, John E. A Modern Introduction to Mathematics. Prentice-Hall Inc, 1956.