Cite
From Chords of Circles to Triangular Numbers to Volumes of Spheres.
MLA
Walter, Marion, and Don Crossfield. “From Chords of Circles to Triangular Numbers to Volumes of Spheres.” Mathematics Teacher, vol. 103, no. 8, Apr. 2010, pp. 616–21. EBSCOhost, widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=asx&AN=48953534&authtype=sso&custid=ns315887.
APA
Walter, M., & Crossfield, D. (2010). From Chords of Circles to Triangular Numbers to Volumes of Spheres. Mathematics Teacher, 103(8), 616–621.
Chicago
Walter, Marion, and Don Crossfield. 2010. “From Chords of Circles to Triangular Numbers to Volumes of Spheres.” Mathematics Teacher 103 (8): 616–21. http://widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=asx&AN=48953534&authtype=sso&custid=ns315887.