Cita APA

Freund, J. E., & Freund, J. E. (1957). A Modern introduction to mathematics. Englewood Cliffs, N.J.

Citación estilo Chicago

Freund, John E., y John E. Freund. A Modern Introduction to Mathematics. Englewood Cliffs, N.J, 1957.

Cita MLA

Freund, John E., y John E. Freund. A Modern Introduction to Mathematics. Englewood Cliffs, N.J, 1957.