Hirsch, L., & Goodman, A. (1998). Understanding intermediate algebra: A course for college students (4th ed.). Brooks/Cole.
Citace podle Chicago (17th ed.)Hirsch, Lewis, a Arthur Goodman. Understanding Intermediate Algebra: A Course for College Students. 4th ed. Pacific Grove, CA: Brooks/Cole, 1998.
Citace podle MLA (9th ed.)Hirsch, Lewis, a Arthur Goodman. Understanding Intermediate Algebra: A Course for College Students. 4th ed. Brooks/Cole, 1998.
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