Gaya APA

Lewis, E, E. (1963). Methods of statistical analysis in economics and business 2nd (2nd ed.). Boston: Houghton Mifflin, c.

Gaya MLA

Lewis, Edward, E.. "Methods of statistical analysis in economics and business 2nd". 2nd ed. Boston: Houghton Mifflin, c, 1963. Buku Umum.