Cita APA (7th ed.)

Bennett, A. B., Jr, & Nelson, L. T. (1985). Mathematics: An informal approach (2nd ed.). Allyn and Bacon.

Cita Chicago (17th ed.)

Bennett, Albert B., Jr, i Leonard T. Nelson. Mathematics: An Informal Approach. 2nd ed. Boston: Allyn and Bacon, 1985.

Cita MLA (9th ed.)

Bennett, Albert B., Jr, i Leonard T. Nelson. Mathematics: An Informal Approach. 2nd ed. Allyn and Bacon, 1985.