APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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